Where does Keiwa Incorporated rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Keiwa Incorporated ranks #6,669 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 Keiwa Incorporated hold?

Keiwa Incorporated holds 50 US utility patents granted between 2015 and 2025, spanning 25 technology areas.

What is Keiwa Incorporated's Innovation Score?

Keiwa Incorporated has an Innovation Score of 41.2 out of 100 (top 34% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Keiwa Incorporated focus on?

Keiwa Incorporated's top technology area is G02B (Optical Elements, Systems OR Apparatus) with 45 patents, ranking #340 of 4,891 assignees active in that subclass. Grants appear in 25 CPC subclasses total.

Is Keiwa Incorporated's patent grant rate increasing or decreasing?

Keiwa Incorporated's recent grant velocity is +10% 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 Keiwa Incorporated's patents?

Keiwa Incorporated's patents average 10.1 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 Keiwa Incorporated 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

Keiwa Incorporated

USPTO PatentsView assignee record - 50 granted patents across 25 technology areas, recorded in grant years 2015–2025. 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: G02B (Optical Elements, Systems OR Apparatus).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Keiwa ranks #6,669 of 49,997 tracked US assignees by granted-patent volume, with 50 patents across 25 technology areas.

#6,669
of 49,997 US assignees by volume: Top 34%
by Innovation Score (41.2/100): 10.1
avg claims per patent: +10%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R6669 · Foreign Corporation #6,669 · 50 grants

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

GRANTS-SMALL 50 grants
UPPER-Q #6,669/49,997
PHOTO-FINISH Hyper Ice
CPC-FOCUS G02B · 25 areas
INNOV-PAR 41.2/100
CLAIMS-PAR 10.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +10% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hyper Ice, Inc. (±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 Keiwa’s 41.2 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 13.6 pts (33%) Velocity 3.9 pts (9%) Breadth 17.7 pts (43%) Claim depth 6.1 pts (15%)

Qualcomm Incorporated · highest

85
Analytics For Life · near

41
GlobeImmune · near

41
Innova Patent · near

41
Keiwa Incorporated · this assignee

41
Mattersight · near

41
3D Lighting… · lowest

7

What this shows Keiwa's Innovation Score is 41.2/100 (top 34% 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 Keiwa?

Each dot is one of Keiwa’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). Keiwa’s own 10.1 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Keiwa's grants concentrate

Keiwa Incorporated is a focused PatentsView assignee: 25 CPC subclasses with 90% of grants classified under G02B (Optical Elements, Systems OR Apparatus). Peak complete grant year is 2019 (7 grants) versus a trough of 2 in 2015. By volume, Keiwa sits between Hyper Ice, Inc. and Kosmek Ltd..

Keiwa's three-year grant acceleration

Keiwa Incorporated shows 11 grants in 2022–2024 against only 19 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.

Hyper Ice

50
Ipex

50
June Life

50
Kamstrup A/S

50
KHN Solutions

50
Kiss Nail Products

50
Klingelnberg

50
Kosmek

50
Keiwa Incorporated ◀

50

What this shows Keiwa holds 50 patents at rank #6,667, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Keiwa

By rank, the assignees closest to #6,667 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Keiwa, neither rank-band nor same-CPC leaders (those blocks stay above). In G02B (Optical Elements), Keiwa ranks #340 of 4,891 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (41 here).

Analytics For Life Inc. 41 Mattersight Corporation 41 GlobeImmune, Inc. 41 Innova Patent GMBH 41

Similar claim depth

Nearest assignees by average claims per patent (10.1 here).

Hiroshima University 10.1 avg Otsuka Pharmaceutical Factory, Inc. 10.2 avg Taiwan Textile Research Institute 10.1 avg Korea Kumho Petrochemical Co., Ltd. 10.2 avg

Keiwa's Innovation Score vs. every tracked assignee

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

41 Top 34% higher than 66% 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 · 2015–2025

Grants by year

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

View data table

Keiwa Incorporated patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	4.0%
2016	4	8.0%
2017	6	12.0%
2018	2	4.0%
2019	7	14.0%
2020	6	12.0%
2021	6	12.0%
2022	4	8.0%
2024	7	14.0%
2025partial year	6	12.0%

Which technologies does Keiwa Incorporated patent most?

G02B - Optical Elements, Systems OR Apparatus 45

G02F - Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optical Logic ELEMENTS; Optical ANALOGUE/DIGITAL Converters 34

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 11

F21V - Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR 6

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 6

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 4

G09F - DISPLAYING; ADVERTISING; SIGNS; Labels OR NAME-PLATES; Seals 2

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 2

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 2

G06V - Image OR Video Recognition OR Understanding 1

H10K - Organic Electric Solid-state Devices 1

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 1

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 1

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 1

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

Top 15 of 25 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

Keiwa Incorporated's patent record in context - here's where to go next.

Keiwa Incorporated's lead technology class is G02B (Optical Elements, Systems OR Apparatus), 90% of its portfolio - see every assignee active in that class. Explore G02B
Ranked #6,669 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Keiwa Incorporated against Hyper Ice, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.2/100 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.