USPTO 2015–2025 USPTO PatentsView US Corporation

Guardian Glass, Llc

USPTO PatentsView assignee record - 251 granted patents across 62 technology areas, active 2017–2025. 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

251

Total patents granted

CPC technology areas

18.0

Avg claims per patent

-26%

5-year filing velocity

The verdict

Guardian holds 251 US patents across 62 technology areas, rank #1,641 of 50,000 tracked assignees.

#1,641
of 50,000 US assignees by volume: Top 6%
by Innovation Score (56.3/100): 18.0
avg claims per patent: -26%
filing velocity, last 5 yrs

Portfolio overview

Guardian Glass, Llc has been granted 251 US utility patents between 2017 and 2025, placing Guardian Glass, Llc at rank #1,641 across all assignees tracked by PlainPatent. This portfolio spans 62 distinct Cooperative Patent Classification (CPC) subclasses, averaging 18.0 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 US Corporation, Guardian Glass, Llc is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Guardian sits between Wayne State University (252 patents, rank #1,637) and American AXLE & Manufacturing, Inc. (250 patents, rank #1,645) - the closest US assignees by grant volume. The composite Innovation Score of 56.3/100 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 107 grants, compared with 144 in the 2015–2019 window, a -26% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US 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. Guardian Glass, Llc's 18.0 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 62 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Guardian Glass, Llc against peers pursuing similar technology classes.

Wayne State Unive…

252
Citizen

251
Datalogic IP Tech…

251
GD Midea Air-cond…

251
THE Aerospace

251
UCB Biopharma SRL

251
Zscaler

251
Guardian Glass ◀

251
American AXLE & M…

250

What this shows Guardian holds 251 patents at rank #1,641, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Guardian

By rank, the assignees closest to #1,641 in granted patent volume.

Leaders in C03C (Chemical Composition OF Glasses)

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

Guardian's Innovation Score vs. every tracked assignee

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

56 Top 6% higher than 94% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Guardian Glass, Llc patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	21	8.4%
2018	44	17.5%
2019	79	31.5%
2020	52	20.7%
2021	20	8.0%
2022	12	4.8%
2023	13	5.2%
2024	7	2.8%
2025	3	1.2%

Which technologies does Guardian Glass, Llc 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 173

E06B - FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES 106

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 52

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 50

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 45

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 44

Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS 44

Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE 34

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 28

G06F - ELECTRIC DIGITAL DATA PROCESSING 26

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 20

B60J - WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES 13

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 11

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 8

E04D - ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS 7

Top 15 of 62 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#1,641

Across all tracked assignees

Innovation Score

56.3 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 Guardian Glass, Llc hold?

Guardian Glass, Llc holds 251 US granted patents filed between 2017 and 2025, spanning 62 technology areas.

What is Guardian Glass, Llc's Innovation Score?

Guardian Glass, Llc has an Innovation Score of 56.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Guardian Glass, Llc focus on?

Guardian Glass, Llc'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 173 patents. The company has filed patents in 62 CPC subclasses total.

Is Guardian Glass, Llc's patent filing rate increasing or decreasing?

Guardian Glass, Llc's recent filing velocity is -26% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Guardian Glass, Llc's patents?

Guardian Glass, Llc's patents average 18.0 claims each. This falls within the standard range, providing solid legal coverage.

How is the Guardian Glass, Llc 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

Guardian's 251 grants land it in the top 6% 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 - Guardian ranks #1,641 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.