Where does Prince Castle LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Prince Castle LLC ranks #4,255 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 Prince Castle LLC hold?

Prince Castle LLC holds 84 US utility patents granted between 2015 and 2022, spanning 28 technology areas.

What is Prince Castle LLC's Innovation Score?

Prince Castle LLC has an Innovation Score of 42.4 out of 100 (top 31% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Prince Castle LLC focus on?

Prince Castle LLC's top technology area is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages) with 36 patents, ranking #24 of 793 assignees active in that subclass. Grants appear in 28 CPC subclasses total.

Is Prince Castle LLC's patent grant rate increasing or decreasing?

Prince Castle LLC's recent grant velocity is -62% 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 Prince Castle LLC's patents?

Prince Castle LLC's patents average 13.7 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 Prince Castle 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.

USPTO 2015–2025 USPTO PatentsView US Corporation

Prince Castle LLC

USPTO PatentsView assignee record - 84 granted patents across 28 technology areas, recorded in grant years 2015–2022. 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Prince ranks #4,255 of 49,997 tracked US assignees by granted-patent volume, with 84 patents across 28 technology areas.

#4,255
of 49,997 US assignees by volume: Top 31%
by Innovation Score (42.4/100): 13.7
avg claims per patent: -62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4255 · US Corporation #4,255 · 84 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 84 grants
TOP-DECILE #4,255/49,997
PHOTO-FINISH National Health…
CPC-FOCUS A47J · 28 areas
INNOV-PAR 42.4/100
CLAIMS-RICH 13.7 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: National Health Research Institutes (±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 Prince’s 42.4 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 15.3 pts (36%) Velocity 0.2 pts (0%) Breadth 18.7 pts (44%) Claim depth 8.2 pts (19%)

Qualcomm Incorporated · highest

85
Bridgestone Bandag · near

42
Ecopro BM · near

42
Prince Castle · this assignee

42
Restoration Robotics · near

42
Vapotherm · near

42
3D Lighting… · lowest

7

What this shows Prince's Innovation Score is 42.4/100 (top 31% 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 Prince?

Each dot is one of Prince’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). Prince’s own 13.7 claims/patent is at or below the 16.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Prince's grants concentrate

Prince Castle LLC is a focused PatentsView assignee: 28 CPC subclasses with 42.9% of grants classified under A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages). Peak complete grant year is 2019 (22 grants) versus a trough of 1 in 2022. By volume, Prince sits between National Health Research Institutes and Refinitiv US Organization LLC.

Prince's three-year grant acceleration

From 2019–2021 to 2022–2024, Prince Castle LLC moved from 44 to 1 grants (0.02x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

National Health R…

84
Nisca

84
Optis Cellular Te…

84
Orthosensor

84
Qingdao Haier Joi…

84
Qualcomm Mems

84
Quanata

84
Refinitiv US Orga…

84
Prince Castle ◀

84

What this shows Prince holds 84 patents at rank #4,255, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Prince

By rank, the assignees closest to #4,255 in granted patent volume.

Leaders in A47J (Kitchen Equipment)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Prince, neither rank-band nor same-CPC leaders (those blocks stay above). In A47J (Kitchen Equipment), Prince ranks #24 of 793 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (42 here).

Bridgestone Bandag, LLC 42 Restoration Robotics, Inc. 42 Ecopro BM Co., Ltd. 42 Vapotherm, Inc. 42

Similar claim depth

Nearest assignees by average claims per patent (13.7 here).

Hisense Mobile Communications Technology Co., Ltd. 13.7 avg CSP Technologies, Inc. 13.7 avg MX Technologies, Inc. 13.7 avg Morphosys AG 13.7 avg

Prince's Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% 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 · 2015–2022

Grants by year

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

View data table

Prince Castle LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	9	10.7%
2016	4	4.8%
2017	10	11.9%
2018	16	19.0%
2019	22	26.2%
2020	17	20.2%
2021	5	6.0%
2022	1	1.2%

Which technologies does Prince Castle LLC patent most?

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 36

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 15

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 9

A47F - Special Furniture, Fittings, OR Accessories FOR Shops, Storehouses, Bars, Restaurants OR THE LIKE; Paying Counters 7

B67D - Dispensing, Delivering OR Transferring Liquids, NOT Otherwise Provided FOR 7

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 6

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 6

F24C - Domestic Stoves OR Ranges ; Details OF Domestic Stoves OR Ranges, OF General Application 6

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 5

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 5

A21B - Bakers' OVENS; Machines OR Equipment FOR Baking 4

A47G - Household OR Table Equipment 4

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 3

A47B - TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture 3

B26D - CUTTING; Details Common TO Machines FOR Perforating, Punching, Cutting-out, Stamping-out OR Severing 3

Top 15 of 28 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

Prince Castle LLC's patent record in context - here's where to go next.

Prince Castle LLC's lead technology class is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages), 42.9% of its portfolio - see every assignee active in that class. Explore A47J
Ranked #4,255 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Prince Castle LLC against National Health Research Institutes, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 42.4/100 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.