Where does Nippoh Chemicals Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nippoh Chemicals Co., Ltd. ranks #41,982 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 Nippoh Chemicals Co., Ltd. hold?

Nippoh Chemicals Co., Ltd. holds 6 US utility patents granted between 2016 and 2018, spanning 8 technology areas.

What is Nippoh Chemicals Co., Ltd.'s Innovation Score?

Nippoh Chemicals Co., Ltd. has an Innovation Score of 19.9 out of 100 (6th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nippoh Chemicals Co., Ltd. focus on?

Nippoh Chemicals Co., Ltd.'s top technology area is C07D (Heterocyclic Compounds) with 5 patents, ranking #1,402 of 3,165 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Nippoh Chemicals Co., Ltd.'s patent grant rate increasing or decreasing?

Nippoh Chemicals Co., Ltd.'s recent grant velocity is -100% 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 Nippoh Chemicals Co., Ltd.'s patents?

Nippoh Chemicals Co., Ltd.'s patents average 5.3 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 Nippoh Chemicals 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

Nippoh Chemicals Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 8 technology areas, recorded in grant years 2016–2018. 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: C07D (Heterocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nippoh ranks #41,982 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 8 technology areas.

#41,982
of 49,997 US assignees by volume: 6th percentile
by Innovation Score (19.9/100): 5.3
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R41982 · Foreign Corporation #41,982 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #41,982/49,997
PHOTO-FINISH Ningbo Lumilan…
CPC-NARROW C07D · 8 areas
INNOV-LOW 19.9/100
CLAIMS-SPARSE 5.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ningbo Lumilan Advanced Materials Co., Ltd. (±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 Nippoh’s 19.9 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 6.7 pts (34%) Velocity 0.0 pts (0%) Breadth 10.0 pts (50%) Claim depth 3.2 pts (16%)

Qualcomm Incorporated · highest

85
Nippoh Chemicals · this assignee

20
3D Lighting… · lowest

7

What this shows Nippoh's Innovation Score is 19.9/100 (6th percentile 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 Nippoh?

Each dot is one of Nippoh’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). Nippoh’s own 5.3 claims/patent is at or below the 9.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nippoh's grants concentrate

Nippoh Chemicals Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 83.3% of grants classified under C07D (Heterocyclic Compounds). Peak complete grant year is 2018 (3 grants) versus a trough of 1 in 2016. By volume, Nippoh sits between Ningbo Lumilan Advanced Materials Co., Ltd. and Nirec Corporation.

Ningbo Lumilan Ad…

6
Ningbo Maoli Elec…

6
Ningbo Pelican Dr…

6
Ningbo Tianqi Int…

6
Nippon Control Sy…

6
Nippon Kasei Chem…

6
Nippon Steel & Su…

6
Nirec

6
Nippoh Chemicals ◀

6

What this shows Nippoh holds 6 patents at rank #41,880, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nippoh

By rank, the assignees closest to #41,880 in granted patent volume.

Leaders in C07D (Heterocyclic Compounds)

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

Nippoh's Innovation Score vs. every tracked assignee

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

20 6th percentile higher than 6% 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 · 2016–2018

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Nippoh Chemicals Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	16.7%
2017	2	33.3%
2018	3	50.0%

Which technologies does Nippoh Chemicals Co., Ltd. patent most?

C07D - Heterocyclic Compounds 5

B01D - Separation 3

C01D - Compounds OF Alkali Metals, i.e. Lithium, Sodium, Potassium, Rubidium, Caesium, OR Francium 1

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

C01C - AMMONIA; CYANOGEN; Compounds Thereof 1

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

C01F - Compounds OF THE Metals Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium, OR OF THE Rare-earth Metals 1

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

Top 8 of 8 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

Nippoh Chemicals Co., Ltd.'s patent record in context - here's where to go next.

Nippoh Chemicals Co., Ltd.'s lead technology class is C07D (Heterocyclic Compounds), 83.3% of its portfolio - see every assignee active in that class. Explore C07D
Ranked #41,982 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nippoh Chemicals Co., Ltd. against Ningbo Lumilan Advanced Materials Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 19.9/100 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.