Where does Hill & Smith Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hill & Smith Limited ranks #31,913 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 Hill & Smith Limited hold?

Hill & Smith Limited holds 8 US utility patents granted between 2015 and 2024, spanning 7 technology areas.

What is Hill & Smith Limited's Innovation Score?

Hill & Smith Limited has an Innovation Score of 47.2 out of 100 (top 19% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hill & Smith Limited's patent grant rate increasing or decreasing?

Hill & Smith Limited's recent grant velocity is -40% 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 Hill & Smith Limited's patents?

Hill & Smith Limited's patents average 17.1 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 Hill & Smith Limited 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

Hill & Smith Limited

Q: What technology areas does Hill & Smith Limited focus on?

Hill & Smith Limited's top technology area is E01F (Additional Work, Such AS Equipping Roads OR THE Construction OF Platforms, Helicopter Landing Stages, Signs, Snow Fences, OR THE Like) with 8 patents, ranking #10 of 168 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 7 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: E01F (Additional Work, Such AS Equipping Roads OR THE Construction OF Platforms, Helicopter Landing Stages, Signs, Snow Fences, OR THE Like).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hill ranks #31,913 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 7 technology areas.

#31,913
of 49,997 US assignees by volume: Top 19%
by Innovation Score (47.2/100): 17.1
avg claims per patent: -40%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31913 · Foreign Corporation #31,913 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #31,913/49,997
PHOTO-FINISH HF Scientific
CPC-NARROW E01F · 7 areas
INNOV-PAR 47.2/100
CLAIMS-RICH 17.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -40% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: HF Scientific, LLC (±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 Hill’s 47.2 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 7.6 pts (16%) Velocity 20.0 pts (42%) Breadth 9.4 pts (20%) Claim depth 10.3 pts (22%)

Qualcomm Incorporated · highest

85
Hill & Smith · this assignee

47
3D Lighting… · lowest

7

What this shows Hill's Innovation Score is 47.2/100 (top 19% 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 Hill?

Each dot is one of Hill’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). Hill’s own 17.1 claims/patent is ABOVE the 11.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hill's grants concentrate

Hill & Smith Limited is a focused PatentsView assignee: 7 CPC subclasses with 100% of grants classified under E01F (Additional Work, Such AS Equipping Roads OR THE Construction OF Platforms, Helicopter Landing Stages, Signs, Snow Fences, OR THE Like). Peak complete grant year is 2016 (3 grants) versus a trough of 1 in 2022. By volume, Hill sits between HF Scientific, LLC and Hirotsu BIO Science Inc..

Hill's three-year grant acceleration

Hill & Smith Limited shows 3 grants in 2022–2024 against only 0 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.

HF Scientific

8
Hiever

8
Higdon Outdoors

8
Highwave

8
Hilverdaflorist B…

8
Himax Analogic

8
Hipra Scientific…

8
Hirotsu BIO Scien…

8
Hill & Smith ◀

8

What this shows Hill holds 8 patents at rank #31,884, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hill

By rank, the assignees closest to #31,884 in granted patent volume.

Leaders in E01F (Additional Work)

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

Hill's Innovation Score vs. every tracked assignee

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

47 Top 19% higher than 81% 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 · 2015–2024

Grants by year

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

View data table

Hill & Smith Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	25.0%
2016	3	37.5%
2022	1	12.5%
2024	2	25.0%

Which technologies does Hill & Smith Limited patent most?

E01F - Additional Work, Such AS Equipping Roads OR THE Construction OF Platforms, Helicopter Landing Stages, Signs, Snow Fences, OR THE Like 8

E04H - Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General 4

E05B - LOCKS; Accessories THEREFOR; Handcuffs 1

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

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 1

E05C - Bolts OR Fastening Devices FOR Wings, Specially FOR Doors OR Windows 1

Y10T - Technical Subjects Covered BY Former US Classification 1

Top 7 of 7 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

Hill & Smith Limited's patent record in context - here's where to go next.

Hill & Smith Limited's lead technology class is E01F (Additional Work, Such AS Equipping Roads OR THE Construction OF Platforms, Helicopter Landing Stages, Signs, Snow Fences, OR THE Like), 100% of its portfolio - see every assignee active in that class. Explore E01F
Ranked #31,913 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hill & Smith Limited against HF Scientific, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.2/100 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.