Where does Risi Stone Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Risi Stone Inc. ranks #42,687 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 Risi Stone Inc. hold?

Risi Stone Inc. holds 6 US utility patents granted between 2015 and 2023, spanning 6 technology areas.

What is Risi Stone Inc.'s Innovation Score?

Risi Stone Inc. has an Innovation Score of 30.4 out of 100 (34th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Risi Stone Inc.'s patent grant rate increasing or decreasing?

Risi Stone Inc.'s recent grant velocity is +0% 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 Risi Stone Inc.'s patents?

Risi Stone Inc.'s patents average 14.0 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 Risi Stone 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Risi Stone Inc.

Q: What technology areas does Risi Stone Inc. focus on?

Risi Stone Inc.'s top technology area is E04B (General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings) with 3 patents. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 6 technology areas, recorded in grant years 2015–2023. 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: E04B (General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Risi ranks #42,687 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 6 technology areas.

#42,687
of 49,997 US assignees by volume: 34th percentile
by Innovation Score (30.4/100): 14.0
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R42687 · Foreign Corporation #42,687 · 6 grants

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

GRANTS-MICRO 6 grants
LOWER-Q #42,687/49,997
PHOTO-FINISH Richard H Sherratt…
CPC-NARROW E04B · 6 areas
INNOV-THIN 30.4/100
CLAIMS-RICH 14.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Richard H. Sherratt and Susan B. Sherratt Revocable Trust Fund (±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.

Qualcomm Incorporated · highest

85
Risi Stone · this assignee

30
3D Lighting… · lowest

7

What this shows Risi's Innovation Score is 30.4/100 (34th 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.

Where Risi's grants concentrate

Risi Stone Inc. is a focused PatentsView assignee: 6 CPC subclasses with 50% of grants classified under E04B (General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings). By volume, Risi sits between Richard H. Sherratt and Susan B. Sherratt Revocable Trust Fund and Robert Bürkle GmbH.

Risi's three-year grant acceleration

Risi Stone Inc. shows 2 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.

Richard H Sherrat…

6
Righthand Robotics

6
Rimack Holdings

6
Rimgard Sweden AB

6
Ritter

6
Robby Galletta En…

6
Robell Research

6
Robert Bürkle

6
Risi Stone ◀

6

What this shows Risi holds 6 patents at rank #42,689, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Risi

By rank, the assignees closest to #42,689 in granted patent volume.

Leaders in E04B (General Building Constructions)

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

Risi's Innovation Score vs. every tracked assignee

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

30 34th percentile higher than 34% 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 · 2015–2023

Grants by year

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

View data table

Risi Stone Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	16.7%
2018	1	16.7%
2019	1	16.7%
2020	1	16.7%
2022	1	16.7%
2023	1	16.7%

Which technologies does Risi Stone Inc. patent most?

E04B - General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings 3

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 3

B28B - Shaping Clay OR Other Ceramic COMPOSITIONS; Shaping SLAG; Shaping Mixtures Containing Cementitious Material, e.g. Plaster 2

E04C - Structural ELEMENTS; Building Materials 2

E04H - Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General 1

B44F - Special Designs OR Pictures 1

Top 6 of 6 technology areas

Where it ranks

Overall rank by patents

#42,687

of 49,997 tracked assignees

Innovation Score

30.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Risi Stone Inc.'s patent record in context - here's where to go next.

Risi Stone Inc.'s lead technology class is E04B (General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings), 50% of its portfolio - see every assignee active in that class. Explore E04B
Ranked #42,687 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Risi Stone Inc. against Richard H. Sherratt and Susan B. Sherratt Revocable Trust Fund, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.4/100 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.