USPTO 2015–2025 USPTO PatentsView US Corporation

Cornerstone Research Group, Inc.

USPTO PatentsView assignee record - 34 granted patents across 47 technology areas, recorded in grant years 2015–2024. 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: 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).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

17.7

Avg claims per patent

+43%

5-year grant velocity

The verdict

According to USPTO PatentsView, Cornerstone ranks #9,238 of 50,000 tracked US assignees by granted-patent volume, with 34 patents across 47 technology areas.

#9,238
of 50,000 US assignees by volume: Top 5%
by Innovation Score (57.5/100): 17.7
avg claims per patent: +43%
grant velocity, last 5 yrs

Portfolio overview

Cornerstone Research Group, Inc. has been granted 34 US utility patents between 2015 and 2024, placing Cornerstone Research Group, Inc. at #9,238 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 47 distinct Cooperative Patent Classification (CPC) subclasses, averaging 17.7 claims per patent with primary concentration in 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). As a US Corporation, Cornerstone Research Group, Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Cornerstone sits between Clearone, Inc. (34 patents, rank #9,234) and DONG GUAN SONG WEI Electric Technology Co., Ltd. (34 patents, rank #9,242) - the closest US assignees by grant volume. The composite Innovation Score of 57.5/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 20 grants, compared with 14 in the 2015–2019 window, a +43% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The US Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Cornerstone Research Group, Inc.'s 17.7 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 47 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Clearone

34
Computime

34
Consolidated Metco

34
Contitech USA

34
Covaris

34
Daikyo Seiko

34
Deckel MAHO Pfron…

34
DONG GUAN SONG WE…

34
Cornerstone Resea… ◀

34

What this shows Cornerstone holds 34 patents at rank #9,238, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Cornerstone

By rank, the assignees closest to #9,238 in granted patent volume.

Leaders in B29C (Shaping OR Joining OF Plastics)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Cornerstone, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (58 here).

Wipotec Gmbh 58 Beijing Xiaomi Intelligent Technology Co., Ltd. 58 Trax Technology Solutions Pte Ltd. 58 Praxair Technology, Inc. 58

Cornerstone's Innovation Score vs. every tracked assignee

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

58 Top 5% higher than 95% 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 · 2015–2024

Grants by year

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

View data table

Cornerstone Research Group, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	8.8%
2016	4	11.8%
2017	2	5.9%
2018	2	5.9%
2019	3	8.8%
2020	2	5.9%
2021	4	11.8%
2022	5	14.7%
2023	5	14.7%
2024	4	11.8%

Which technologies does Cornerstone Research Group, Inc. patent most?

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 8

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 7

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 6

A61G - TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS ; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES 6

A61F - FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRS 5

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 4

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 3

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 3

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 2

A41D - OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES 2

G06F - ELECTRIC DIGITAL DATA PROCESSING 2

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 2

C06B - EXPLOSIVES OR THERMIC COMPOSITIONS ; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES 2

F17C - VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES 2

Top 15 of 47 technology areas

Grant record at a glance

Portfolio Volume 34 grants

CPC subclasses 47

Avg. claims / grant 17.7

Velocity +43%

Historical grant data only; it does not rate legal strength or current strategy.

Where it ranks

Overall rank by patents

#9,238

of 50,000 tracked assignees

Innovation Score

57.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

Where does Cornerstone Research Group, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Cornerstone Research Group, Inc. ranks #9,238 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Cornerstone Research Group, Inc. hold?

Cornerstone Research Group, Inc. holds 34 US utility patents granted between 2015 and 2024, spanning 47 technology areas.

What is Cornerstone Research Group, Inc.'s Innovation Score?

Cornerstone Research Group, Inc. has an Innovation Score of 57.5 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 Cornerstone Research Group, Inc. focus on?

Cornerstone Research Group, Inc.'s top technology area is 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) with 8 patents. Grants appear in 47 CPC subclasses total.

Is Cornerstone Research Group, Inc.'s patent grant rate increasing or decreasing?

Cornerstone Research Group, Inc.'s recent grant velocity is +43% 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 Cornerstone Research Group, Inc.'s patents?

Cornerstone Research Group, Inc.'s patents average 17.7 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 Cornerstone Research Group, Inc. 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

Cornerstone's 34 grants land it in the top 5% 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 - Cornerstone ranks #9,238 of 50,000. Top 50 holders
Most of this portfolio concentrates in B29C - see who else leads that technology area. B29C 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

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.