Where does Japan Petroleum Exploration Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Japan Petroleum Exploration Co., Ltd. ranks #7,577 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Japan Petroleum Exploration Co., Ltd. hold?

Japan Petroleum Exploration Co., Ltd. holds 43 US utility patents granted between 2015 and 2024, spanning 23 technology areas.

What is Japan Petroleum Exploration Co., Ltd.'s Innovation Score?

Japan Petroleum Exploration Co., Ltd. has an Innovation Score of 47.3 out of 100 (top 19% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Japan Petroleum Exploration Co., Ltd.'s patent grant rate increasing or decreasing?

Japan Petroleum Exploration Co., Ltd.'s recent grant velocity is -92% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Japan Petroleum Exploration Co., Ltd.'s patents?

Japan Petroleum Exploration Co., Ltd.'s patents average 6.6 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Japan Petroleum Exploration Co., Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Japan Petroleum Exploration Co., Ltd.

Q: What technology areas does Japan Petroleum Exploration Co., Ltd. focus on?

Japan Petroleum Exploration Co., Ltd.'s top technology area is C10G (Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes) with 38 patents, ranking #30 of 504 assignees active in that subclass. Grants appear in 23 CPC subclasses total.

USPTO PatentsView assignee record - 43 granted patents across 23 technology areas, recorded in grant years 2015–2024. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: C10G (Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GAS).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Japan ranks #7,577 of 49,997 tracked US assignees by granted-patent volume, with 43 patents across 23 technology areas.

#7,577
of 49,997 US assignees by volume: Top 19%
by Innovation Score (47.3/100): 6.6
avg claims per patent: -92%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7577 · Foreign Corporation #7,577 · 43 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 43 grants
UPPER-Q #7,577/49,997
PHOTO-FINISH Integra LifeSciences
CPC-FOCUS C10G · 23 areas
INNOV-PAR 47.3/100
CLAIMS-SPARSE 6.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -92% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Integra LifeSciences Corporation (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Japan’s 47.3 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 13.1 pts (28%) Velocity 13.3 pts (28%) Breadth 17.0 pts (36%) Claim depth 4.0 pts (8%)

Qualcomm Incorporated · highest

85
Citizen Holdings · near

47
Japan Petroleum… · this assignee

47
Saco · near

47
The Medical… · near

47
Yunjing Intelligence… · near

47
3D Lighting… · lowest

7

What this shows Japan's Innovation Score is 47.3/100 (top 19% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Japan?

Each dot is one of Japan’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Japan’s own 6.6 claims/patent is at or below the 10.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Japan vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Japan's grants concentrate

Japan Petroleum Exploration Co., Ltd. is a focused PatentsView assignee: 23 CPC subclasses with 88.4% of grants classified under C10G (Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GAS). Peak complete grant year is 2016 (17 grants) versus a trough of 1 in 2021. By volume, Japan sits between Invently Automotive Inc. and Karl Leibinger Medizintechnik GMBH & Co. KG.

Japan's three-year grant acceleration

Japan Petroleum Exploration Co., Ltd. shows 2 grants in 2022–2024 against only 1 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Invently Automoti…

43
Integra Lifescien…

43
International Ins…

43
Inveniam Capital…

43
Jiangsu Xcmg Cons…

43
Johnson Matthey D…

43
KAI R&D Center

43
Karl Leibinger Me…

43
Japan Petroleum E… ◀

43

What this shows Japan holds 43 patents at rank #7,577, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Japan

By rank, the assignees closest to #7,577 in granted patent volume.

Leaders in C10G (Cracking Hydrocarbon OILS)

Other assignees with the most granted patents in Japan's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Japan, neither rank-band nor same-CPC leaders (those blocks stay above). In C10G (Cracking Hydrocarbon OILS), Japan ranks #30 of 504 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (47 here).

The Medical Research, Infrastructure and Health Services Fund of the Tel-Aviv Medical Center 47 Yunjing Intelligence (Shenzhen) Co., Ltd. 47 Citizen Holdings Co., Ltd. 47 Saco Technologies Inc. 47

Japan's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

47 Top 19% higher than 81% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Japan Petroleum Exploration Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	13	30.2%
2016	17	39.5%
2017	7	16.3%
2018	3	7.0%
2021	1	2.3%
2022	1	2.3%
2024	1	2.3%

Which technologies does Japan Petroleum Exploration Co., Ltd. patent most?

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 38

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 21

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 11

B01D - Separation 8

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

C07C - Acyclic OR Carbocyclic Compounds 4

C10K - Purifying OR Modifying THE Chemical Composition OF Combustible Gases Containing Carbon Monoxide 3

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 3

C10L - Fuels NOT Otherwise Provided FOR; Natural GAS; Synthetic Natural GAS Obtained BY Processes NOT Covered BY Subclasses C10g OR C10K; Liquified Petroleum GAS; USE OF Additives TO Fuels OR FIRES; Fire-lighters 3

Y02C - Capture, Storage, Sequestration OR Disposal OF Greenhouse Gases [GHG] 2

F25J - Liquefaction, Solidification OR Separation OF Gases OR Gaseous ; OR Liquefied GASEOUS; Mixtures BY Pressure AND Cold Treatment ; OR BY Bringing Them Into THE Supercritical State 2

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

G01L - Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, OR Fluid Pressure 1

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 1

F22B - Methods OF Steam GENERATION; Steam Boilers 1

Top 15 of 23 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Japan Petroleum Exploration Co., Ltd.'s patent record in context - here's where to go next.

Japan Petroleum Exploration Co., Ltd.'s lead technology class is C10G (Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GAS), 88.4% of its portfolio - see every assignee active in that class. Explore C10G
Ranked #7,577 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Japan Petroleum Exploration Co., Ltd. against Invently Automotive Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.3/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.