USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Adamant Namiki Precision Jewel Co., Ltd.

USPTO PatentsView assignee record - 25 granted patents across 27 technology areas, recorded in grant years 2018–2023. 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: H02K (DYNAMO-ELECTRIC MACHINES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

8.8

Avg claims per patent

+8%

5-year grant velocity

The verdict

According to USPTO PatentsView, Adamant ranks #11,895 of 50,000 tracked US assignees by granted-patent volume, with 25 patents across 27 technology areas.

#11,895
of 50,000 US assignees by volume: Top 40%
by Innovation Score (38.7/100): 8.8
avg claims per patent: +8%
grant velocity, last 5 yrs

Portfolio overview

Adamant Namiki Precision Jewel Co., Ltd. has been granted 25 US utility patents between 2018 and 2023, placing Adamant Namiki Precision Jewel Co., Ltd. at #11,895 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 27 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.8 claims per patent with primary concentration in H02K (DYNAMO-ELECTRIC MACHINES). As a Foreign Corporation, Adamant Namiki Precision Jewel Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Adamant sits between Atomic Energy Council—institute OF Nuclear Energy Research (25 patents, rank #11,909) and Air Water Inc. (25 patents, rank #11,917) - the closest US assignees by grant volume. The composite Innovation Score of 38.7/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 13 grants, compared with 12 in the 2015–2019 window, a +8% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Adamant Namiki Precision Jewel Co., Ltd.'s 8.8 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 27 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Atomic Energy Cou…

25
Autoneum Manageme…

25
Abaxis

25
Acufloor

25
Adeia Imaging

25
Advanced Elemental

25
Aeroflex Colorado…

25
Air Water

25
Adamant Namiki Pr… ◀

25

What this shows Adamant holds 25 patents at rank #11,913, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Adamant

By rank, the assignees closest to #11,913 in granted patent volume.

Leaders in H02K (Dynamo-electric Machines)

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

Adamant's Innovation Score vs. every tracked assignee

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

39 Top 40% higher than 60% of 50,000 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 · 2018–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Adamant Namiki Precision Jewel Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	3	12.0%
2019	9	36.0%
2020	3	12.0%
2021	2	8.0%
2022	5	20.0%
2023	3	12.0%

Which technologies does Adamant Namiki Precision Jewel Co., Ltd. patent most?

H02K - DYNAMO-ELECTRIC MACHINES 6

C30B - SINGLE-CRYSTAL GROWTH ; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL ; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE ; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WI 5

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 5

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 4

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 4

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 4

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 3

H10D - INORGANIC ELECTRIC SEMICONDUCTOR DEVICES 3

F04B - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 2

A61M - DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 2

A61C - DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE 2

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2

F03G - SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR 1

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 1

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 1

Top 15 of 27 technology areas

Grant record at a glance

Portfolio Volume 25 grants

CPC subclasses 27

Avg. claims / grant 8.8

Velocity +8%

Historical grant data only; it does not rate legal strength or current strategy.

Where it ranks

Overall rank by patents

#11,895

of 50,000 tracked assignees

Innovation Score

38.7 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

Where does Adamant Namiki Precision Jewel Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Adamant Namiki Precision Jewel Co., Ltd. ranks #11,895 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Adamant Namiki Precision Jewel Co., Ltd. hold?

Adamant Namiki Precision Jewel Co., Ltd. holds 25 US utility patents granted between 2018 and 2023, spanning 27 technology areas.

What is Adamant Namiki Precision Jewel Co., Ltd.'s Innovation Score?

Adamant Namiki Precision Jewel Co., Ltd. has an Innovation Score of 38.7 out of 100 (top 40% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Adamant Namiki Precision Jewel Co., Ltd. focus on?

Adamant Namiki Precision Jewel Co., Ltd.'s top technology area is H02K (DYNAMO-ELECTRIC MACHINES) with 6 patents. Grants appear in 27 CPC subclasses total.

Is Adamant Namiki Precision Jewel Co., Ltd.'s patent grant rate increasing or decreasing?

Adamant Namiki Precision Jewel Co., Ltd.'s recent grant velocity is +8% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Adamant Namiki Precision Jewel Co., Ltd.'s patents?

Adamant Namiki Precision Jewel Co., Ltd.'s patents average 8.8 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 Adamant Namiki Precision Jewel 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.

How to use this portfolio

Adamant's 25 grants land it in the top 40% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Adamant ranks #11,895 of 50,000. Top 50 holders
Most of this portfolio concentrates in H02K - see who else leads that technology area. H02K leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Cite this page

Plainpatent, “Adamant Namiki Precision Jewel Co., Ltd. Patent Portfolio.” Compiled from the underlying federal/official data source; data as of 2015–2025. https://plainpatent.com/company/adamant-namiki-precision-jewel-co-ltd/

Formal citation formats (APA / MLA)

APA: Plainpatent. (2015). Adamant Namiki Precision Jewel Co., Ltd. Patent Portfolio. Retrieved August 18, 2026, from https://plainpatent.com/company/adamant-namiki-precision-jewel-co-ltd/

MLA: "Adamant Namiki Precision Jewel Co., Ltd. Patent Portfolio." Plainpatent, 2015, https://plainpatent.com/company/adamant-namiki-precision-jewel-co-ltd/.

You are welcome to quote these figures with attribution to Plainpatent and the underlying source. The URL above is stable. Licensed CC BY 4.0 - reuse with attribution.

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.