Where does H&L Tooth Company rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), H&L Tooth Company ranks #40,717 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 H&L Tooth Company hold?

H&L Tooth Company holds 6 US utility patents granted between 2015 and 2019, spanning 1 technology areas.

What is H&L Tooth Company's Innovation Score?

H&L Tooth Company has an Innovation Score of 14.4 out of 100 (3rd 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 H&L Tooth Company focus on?

H&L Tooth Company's top technology area is E02F (DREDGING; Soil-shifting) with 2 patents, ranking #182 of 348 assignees active in that subclass. Grants appear in 1 CPC subclasses total.

Is H&L Tooth Company's patent grant rate increasing or decreasing?

H&L Tooth Company's recent grant velocity is -100% 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 H&L Tooth Company's patents?

H&L Tooth Company's patents average 6.8 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 H&L Tooth Company 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

H&L Tooth Company

USPTO PatentsView assignee record - 6 granted patents across 1 technology areas, recorded in grant years 2015–2019. 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: E02F (DREDGING; Soil-shifting).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, H&l ranks #40,717 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 1 technology areas.

#40,717
of 49,997 US assignees by volume: 3rd percentile
by Innovation Score (14.4/100): 6.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R40717 · US Corporation #40,717 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #40,717/49,997
PHOTO-FINISH Guizhou Zhenhua E-Chem
CPC-NARROW E02F · 1 areas
INNOV-LOW 14.4/100
CLAIMS-SPARSE 6.8 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Guizhou Zhenhua E-Chem Inc. (±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 H&l’s 14.4 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 6.7 pts (47%) Velocity 0.0 pts (0%) Breadth 3.5 pts (24%) Claim depth 4.1 pts (29%)

Qualcomm Incorporated · highest

85
H&L Tooth · this assignee

14
3D Lighting… · lowest

7

What this shows H&l's Innovation Score is 14.4/100 (3rd 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 H&l?

Each dot is one of H&l’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). H&l’s own 6.8 claims/patent is at or below the 13.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where H&l's grants concentrate

H&L Tooth Company is a focused PatentsView assignee: 1 CPC subclasses with 33.3% of grants classified under E02F (DREDGING; Soil-shifting). Peak complete grant year is 2016 (2 grants) versus a trough of 1 in 2015. By volume, H&l sits between Guizhou Zhenhua E-Chem Inc. and HAE Kwang Co., Ltd..

Guizhou Zhenhua E…

6
Gustomsc Resource…

6
H - 07 SRL

6
H Quest Partners

6
H&smotorsports

6
H C Duke & Son

6
H3alth

6
HAE Kwang

6
H&L Tooth ◀

6

What this shows H&L holds 6 patents at rank #40,577, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near H&L

By rank, the assignees closest to #40,577 in granted patent volume.

Leaders in E02F (Dredging)

Other assignees with the most granted patents in H&L's primary technology class.

H&l's Innovation Score vs. every tracked assignee

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

14 3rd percentile higher than 3% 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 · 2015–2019

Grants by year

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

View data table

H&L Tooth Company patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	16.7%
2016	2	33.3%
2017	2	33.3%
2019	1	16.7%

Which technologies does H&L Tooth Company patent most?

E02F - DREDGING; Soil-shifting 2

Top 1 of 1 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

H&L Tooth Company's patent record in context - here's where to go next.

H&L Tooth Company's lead technology class is E02F (DREDGING; Soil-shifting), 33.3% of its portfolio - see every assignee active in that class. Explore E02F
Ranked #40,717 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare H&L Tooth Company against Guizhou Zhenhua E-Chem Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 14.4/100 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.