Where does Central Glass Company, Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Central Glass Company, Limited ranks #1,534 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 Central Glass Company, Limited hold?

Central Glass Company, Limited holds 271 US utility patents granted between 2015 and 2025, spanning 91 technology areas.

What is Central Glass Company, Limited's Innovation Score?

Central Glass Company, Limited has an Innovation Score of 57.4 out of 100 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Central Glass Company, Limited focus on?

Central Glass Company, Limited's top technology area is C07C (Acyclic OR Carbocyclic Compounds) with 73 patents, ranking #52 of 2,691 assignees active in that subclass. Grants appear in 91 CPC subclasses total.

Is Central Glass Company, Limited's patent grant rate increasing or decreasing?

Central Glass Company, Limited's recent grant velocity is -46% 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 Central Glass Company, Limited's patents?

Central Glass Company, Limited's patents average 12.4 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 Central Glass Company, Limited 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

Central Glass Company, Limited

USPTO PatentsView assignee record - 271 granted patents across 91 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: C07C (Acyclic OR Carbocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Central ranks #1,534 of 49,997 tracked US assignees by granted-patent volume, with 271 patents across 91 technology areas.

#1,534
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.4/100): 12.4
avg claims per patent: -46%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1534 · Foreign Corporation #1,534 · 271 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MID 271 grants
TOP-DECILE #1,534/49,997
PHOTO-FINISH Fairchild Semiconduc…
CPC-WIDE C07C · 91 areas
INNOV-PAR 57.4/100
CLAIMS-RICH 12.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -46% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Fairchild Semiconductor 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 Central’s 57.4 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 19.4 pts (34%) Velocity 5.6 pts (10%) Breadth 25.0 pts (44%) Claim depth 7.4 pts (13%)

Qualcomm Incorporated · highest

85
6K · near

57
Central Glass · this assignee

57
Concept Laser · near

57
GAS Technology… · near

57
Hyperfine Operations · near

57
3D Lighting… · lowest

7

What this shows Central's Innovation Score is 57.4/100 (top 5% 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 Central?

Each dot is one of Central’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). Central’s own 12.4 claims/patent is at or below the 17.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Central's grant cadence moved

Between 2020–2024, Central Glass Company, Limited received 91 grants versus 167 in 2015–2019 (-46% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2015 at 55 grants and bottomed in 2023 at 14. Lead class C07C accounts for 26.9% of the portfolio across 91 subclasses. Volume neighbours: William Marsh Rice University (#1,530) and Techtronic Cordless GP (#1,538).

Central's three-year grant acceleration

From 2019–2021 to 2022–2024, Central Glass Company, Limited moved from 62 to 52 grants (0.84x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,690. See the growth leaderboard.

William Marsh Ric…

273
Acclarent

272
China University…

272
Woodward

272
Fairchild Semicon…

271
Ionis Pharmaceuti…

271
Resonac

271
Techtronic Cordle…

271
Central Glass ◀

271

What this shows Central holds 271 patents at rank #1,534, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Central

By rank, the assignees closest to #1,534 in granted patent volume.

Leaders in C07C (Acyclic OR Carbocyclic Compounds)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Central, neither rank-band nor same-CPC leaders (those blocks stay above). In C07C (Acyclic OR Carbocyclic Compounds), Central ranks #52 of 2,691 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Concept Laser, GmbH 57 6K Inc. 57 GAS Technology Institute 57 Hyperfine Operations, Inc. 57

Similar claim depth

Nearest assignees by average claims per patent (12.4 here).

Univation Technologies, LLC 12.4 avg Akzenta Paneele + Profile GMBH 12.4 avg Altor Bioscience LLC 12.4 avg Crestron Electronics, Inc. 12.4 avg

Central's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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

Central Glass Company, Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	55	20.3%
2016	36	13.3%
2017	31	11.4%
2018	22	8.1%
2019	23	8.5%
2020	21	7.7%
2021	18	6.6%
2022	24	8.9%
2023	14	5.2%
2024	14	5.2%
2025partial year	13	4.8%

Which technologies does Central Glass Company, Limited patent most?

C07C - Acyclic OR Carbocyclic Compounds 73

H01L - Semiconductor Devices NOT Covered BY Class H10 67

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 42

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 39

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 39

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 32

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 29

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 23

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 21

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 21

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 19

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 18

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 18

C07B - General Methods OF Organic CHEMISTRY; Apparatus Therefor 16

C08L - Compositions OF Macromolecular Compounds 15

Top 15 of 91 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

Central Glass Company, Limited's patent record in context - here's where to go next.

Central Glass Company, Limited's lead technology class is C07C (Acyclic OR Carbocyclic Compounds), 26.9% of its portfolio - see every assignee active in that class. Explore C07C
Ranked #1,534 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Central Glass Company, Limited against William Marsh Rice University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.4/100 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.