Where does Grindmaster Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Grindmaster Corporation ranks #17,719 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 Grindmaster Corporation hold?

Grindmaster Corporation holds 16 US utility patents granted between 2015 and 2021, spanning 10 technology areas.

What is Grindmaster Corporation's Innovation Score?

Grindmaster Corporation has an Innovation Score of 26.7 out of 100 (21st percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Grindmaster Corporation focus on?

Grindmaster Corporation's top technology area is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages) with 6 patents, ranking #170 of 793 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

Is Grindmaster Corporation's patent grant rate increasing or decreasing?

Grindmaster Corporation's recent grant velocity is -93% 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 Grindmaster Corporation's patents?

Grindmaster Corporation's patents average 9.5 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 Grindmaster Corporation 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 US Corporation

Grindmaster Corporation

USPTO PatentsView assignee record - 16 granted patents across 10 technology areas, recorded in grant years 2015–2021. 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: A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Grindmaster ranks #17,719 of 49,997 tracked US assignees by granted-patent volume, with 16 patents across 10 technology areas.

#17,719
of 49,997 US assignees by volume: 21st percentile
by Innovation Score (26.7/100): 9.5
avg claims per patent: -93%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R17719 · US Corporation #17,719 · 16 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 16 grants
MID-PACK #17,719/49,997
PHOTO-FINISH Great Wall Semicondu…
CPC-FOCUS A47J · 10 areas
INNOV-THIN 26.7/100
CLAIMS-PAR 9.5 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -93% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Great Wall 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 Grindmaster’s 26.7 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 9.8 pts (37%) Velocity 0.0 pts (0%) Breadth 11.2 pts (42%) Claim depth 5.7 pts (21%)

Qualcomm Incorporated · highest

85
Grindmaster · this assignee

27
3D Lighting… · lowest

7

What this shows Grindmaster's Innovation Score is 26.7/100 (21st 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.

Does more volume mean deeper claims for Grindmaster?

Each dot is one of Grindmaster’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). Grindmaster’s own 9.5 claims/patent is at or below the 15.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Grindmaster's grants concentrate

Grindmaster Corporation is a focused PatentsView assignee: 10 CPC subclasses with 37.5% of grants classified under A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages). Peak complete grant year is 2019 (6 grants) versus a trough of 1 in 2015. By volume, Grindmaster sits between Great Wall Semiconductor Corporation and Gyroscope Therapeutics Limited.

Great Wall Semico…

16
Green Products &

16
Greenfly

16
Greenheck Fan

16
Guangzhou Fengsen…

16
Guardtime

16
Gunitech

16
Gyroscope Therape…

16
Grindmaster ◀

16

What this shows Grindmaster holds 16 patents at rank #17,720, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Grindmaster

By rank, the assignees closest to #17,720 in granted patent volume.

Leaders in A47J (Kitchen Equipment)

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

Grindmaster's Innovation Score vs. every tracked assignee

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

27 21st percentile higher than 21% 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 · 2015–2021

Grants by year

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

View data table

Grindmaster Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	6.3%
2016	1	6.3%
2017	5	31.3%
2018	2	12.5%
2019	6	37.5%
2021	1	6.3%

Which technologies does Grindmaster Corporation patent most?

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 6

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 3

B67D - Dispensing, Delivering OR Transferring Liquids, NOT Otherwise Provided FOR 3

A23G - COCOA; Cocoa Products, e.g. CHOCOLATE; Substitutes FOR Cocoa OR Cocoa PRODUCTS; CONFECTIONERY; Chewing GUM; ICE-CREAM; Preparation Thereof 2

E05Y - Indexing Scheme Associated With Subclasses E05d AND E05f, Relating TO Construction Elements, Electric Control, Power Supply, Power Signal OR Transmission, User Interfaces, Mounting OR Coupling, Details, Accessories, Auxiliary Operations NOT Otherwise Provided FOR, Application Thereof 1

E05D - Hinges OR Suspension Devices FOR Doors, Windows OR Wings 1

E05F - Devices FOR Moving Wings Into Open OR Closed POSITION; Checks FOR WINGS; Wing Fittings NOT Otherwise Provided FOR, Concerned With THE Functioning OF THE Wing 1

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 1

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 1

B67C - Cleaning, Filling With Liquids OR Semiliquids, OR Emptying, OF Bottles, Jars, Cans, Casks, Barrels, OR Similar Containers, NOT Otherwise Provided FOR; Funnels 1

Top 10 of 10 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

Grindmaster Corporation's patent record in context - here's where to go next.

Grindmaster Corporation's lead technology class is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages), 37.5% of its portfolio - see every assignee active in that class. Explore A47J
Ranked #17,719 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Grindmaster Corporation against Great Wall Semiconductor Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.7/100 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.