Where does Itoh Optical Industrial Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Itoh Optical Industrial Co., Ltd. ranks #41,056 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 Itoh Optical Industrial Co., Ltd. hold?

Itoh Optical Industrial Co., Ltd. holds 6 US utility patents granted between 2016 and 2024, spanning 8 technology areas.

What is Itoh Optical Industrial Co., Ltd.'s Innovation Score?

Itoh Optical Industrial Co., Ltd. has an Innovation Score of 31.9 out of 100 (39th 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 Itoh Optical Industrial Co., Ltd. focus on?

Itoh Optical Industrial Co., Ltd.'s top technology area is G02B (Optical Elements, Systems OR Apparatus) with 4 patents, ranking #1,997 of 4,891 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Itoh Optical Industrial Co., Ltd.'s patent grant rate increasing or decreasing?

Itoh Optical Industrial Co., Ltd.'s recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Itoh Optical Industrial Co., Ltd.'s patents?

Itoh Optical Industrial Co., Ltd.'s patents average 8.7 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 Itoh Optical Industrial 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

Itoh Optical Industrial Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 8 technology areas, recorded in grant years 2016–2024. 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: G02B (Optical Elements, Systems OR Apparatus).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Itoh ranks #41,056 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 8 technology areas.

#41,056
of 49,997 US assignees by volume: 39th percentile
by Innovation Score (31.9/100): 8.7
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R41056 · Foreign Corporation #41,056 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #41,056/49,997
PHOTO-FINISH Isopure
CPC-NARROW G02B · 8 areas
INNOV-THIN 31.9/100
CLAIMS-PAR 8.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Isopure, Corp. (±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 Itoh’s 31.9 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 (21%) Velocity 10.0 pts (31%) Breadth 10.0 pts (31%) Claim depth 5.2 pts (16%)

Qualcomm Incorporated · highest

85
Itoh Optical… · this assignee

32
3D Lighting… · lowest

7

What this shows Itoh's Innovation Score is 31.9/100 (39th 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 Itoh?

Each dot is one of Itoh’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). Itoh’s own 8.7 claims/patent is at or below the 16.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Itoh's grants concentrate

Itoh Optical Industrial Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 66.7% of grants classified under G02B (Optical Elements, Systems OR Apparatus). By volume, Itoh sits between Isopure, Corp. and Iview Therapeutics, Inc..

Itoh's three-year grant acceleration

Itoh Optical Industrial Co., Ltd. shows 3 grants in 2022–2024 against only 2 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.

Isopure

6
Isotek Microwave

6
Isringhausen & KG

6
Itochu

6
Itvers

6
ITW EF&C Korea

6
IVC BV

6
Iview Therapeutics

6
Itoh Optical Indu… ◀

6

What this shows Itoh holds 6 patents at rank #40,938, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Itoh

By rank, the assignees closest to #40,938 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Itoh's Innovation Score vs. every tracked assignee

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

32 39th percentile higher than 39% 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 · 2016–2024

Grants by year

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

View data table

Itoh Optical Industrial Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	16.7%
2020	1	16.7%
2021	1	16.7%
2022	1	16.7%
2023	1	16.7%
2024	1	16.7%

Which technologies does Itoh Optical Industrial Co., Ltd. patent most?

G02B - Optical Elements, Systems OR Apparatus 4

G02C - SPECTACLES; Sunglasses OR Goggles Insofar AS They Have THE Same Features AS SPECTACLES; Contact Lenses 4

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 1

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 1

H04N - Pictorial Communication, e.g. Television 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

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

Itoh Optical Industrial Co., Ltd.'s patent record in context - here's where to go next.

Itoh Optical Industrial Co., Ltd.'s lead technology class is G02B (Optical Elements, Systems OR Apparatus), 66.7% of its portfolio - see every assignee active in that class. Explore G02B
Ranked #41,056 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Itoh Optical Industrial Co., Ltd. against Isopure, Corp., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.9/100 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.