USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Pilkington Group Limited

USPTO PatentsView assignee record - 144 granted patents across 69 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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 MA).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

144

Total patents granted

CPC technology areas

17.1

Avg claims per patent

+22%

5-year filing velocity

The verdict

Pilkington holds 144 US patents across 69 technology areas, rank #2,696 of 50,000 tracked assignees.

#2,696
of 50,000 US assignees by volume: Top 4%
by Innovation Score (59.5/100): 17.1
avg claims per patent: +22%
filing velocity, last 5 yrs

Portfolio overview

Pilkington Group Limited has been granted 144 US utility patents between 2015 and 2025, placing Pilkington Group Limited at rank #2,696 across all assignees tracked by PlainPatent. This portfolio spans 69 distinct Cooperative Patent Classification (CPC) subclasses, averaging 17.1 claims per patent with primary concentration in 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 MA). As a Foreign Corporation, Pilkington Group Limited is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Pilkington sits between Melexis Technologies Nv (144 patents, rank #2,692) and Statoil Petroleum AS (144 patents, rank #2,700) - the closest US assignees by grant volume. The composite Innovation Score of 59.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 79 grants, compared with 65 in the 2015–2019 window, a +22% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Pilkington Group Limited's 17.1 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 69 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Pilkington Group Limited against peers pursuing similar technology classes.

Melexis

144
Mitel Networks

144
Nbcuniversal Media

144
Nidec Tosok

144
Qualcomm

144
Quantcast

144
Showa Denko Mater…

144
Statoil Petroleum…

144
Pilkington Group ◀

144

What this shows Pilkington holds 144 patents at rank #2,696, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Pilkington

By rank, the assignees closest to #2,696 in granted patent volume.

Leaders in C03C (Chemical Composition OF Glasses)

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

Pilkington's Innovation Score vs. every tracked assignee

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

60 Top 4% higher than 96% 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 · 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

Pilkington Group Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	12	8.3%
2016	9	6.3%
2017	13	9.0%
2018	15	10.4%
2019	16	11.1%
2020	13	9.0%
2021	14	9.7%
2022	15	10.4%
2023	14	9.7%
2024	17	11.8%
2025	6	4.2%

Which technologies does Pilkington Group Limited patent most?

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 67

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 55

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 22

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 19

E06B - FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES 17

B60J - WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES 14

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 14

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 12

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 10

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 9

H10F - INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION 7

H01R - ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 7

H01Q - ANTENNAS, i.e. RADIO AERIALS 7

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 6

H10K - ORGANIC ELECTRIC SOLID-STATE DEVICES 5

Top 15 of 69 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Growing

Where it ranks

Overall rank by patents

#2,696

Across all tracked assignees

Innovation Score

59.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Pilkington Group Limited hold?

Pilkington Group Limited holds 144 US granted patents filed between 2015 and 2025, spanning 69 technology areas.

What is Pilkington Group Limited's Innovation Score?

Pilkington Group Limited has an Innovation Score of 59.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Pilkington Group Limited focus on?

Pilkington Group Limited's top technology area is 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) with 67 patents. The company has filed patents in 69 CPC subclasses total.

Is Pilkington Group Limited's patent filing rate increasing or decreasing?

Pilkington Group Limited's recent filing velocity is +22% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Pilkington Group Limited's patents?

Pilkington Group Limited's patents average 17.1 claims each. This falls within the standard range, providing solid legal coverage.

How is the Pilkington Group 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.

How to use this portfolio

Pilkington's 144 grants land it in the top 4% 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 - Pilkington ranks #2,696 of 50,000. Top 50 holders
Most of this portfolio concentrates in C03C - see who else leads that technology area. C03C 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.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.