Where does Hamari Chemicals, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hamari Chemicals, Ltd. ranks #47,297 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 Hamari Chemicals, Ltd. hold?

Hamari Chemicals, Ltd. holds 5 US utility patents granted between 2015 and 2021, spanning 7 technology areas.

What is Hamari Chemicals, Ltd.'s Innovation Score?

Hamari Chemicals, Ltd. has an Innovation Score of 22.5 out of 100 (10th 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 Hamari Chemicals, Ltd. focus on?

Hamari Chemicals, Ltd.'s top technology area is C07D (Heterocyclic Compounds) with 4 patents, ranking #1,646 of 3,165 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Hamari Chemicals, Ltd.'s patent grant rate increasing or decreasing?

Hamari Chemicals, Ltd.'s recent grant velocity is -75% 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 Hamari Chemicals, Ltd.'s patents?

Hamari Chemicals, Ltd.'s patents average 11.6 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 Hamari Chemicals, Ltd. 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

Hamari Chemicals, Ltd.

USPTO PatentsView assignee record - 5 granted patents across 7 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: C07D (Heterocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hamari ranks #47,297 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 7 technology areas.

#47,297
of 49,997 US assignees by volume: 10th percentile
by Innovation Score (22.5/100): 11.6
avg claims per patent: -75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R47297 · Foreign Corporation #47,297 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #47,297/49,997
PHOTO-FINISH Hagenuk KMT…
CPC-NARROW C07D · 7 areas
INNOV-THIN 22.5/100
CLAIMS-PAR 11.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hagenuk KMT Kabelmesstechnik GmbH (±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 Hamari’s 22.5 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 6.2 pts (27%) Velocity 0.0 pts (0%) Breadth 9.4 pts (42%) Claim depth 7.0 pts (31%)

Qualcomm Incorporated · highest

85
Hamari Chemicals · this assignee

23
3D Lighting… · lowest

7

What this shows Hamari's Innovation Score is 22.5/100 (10th 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 Hamari?

Each dot is one of Hamari’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). Hamari’s own 11.6 claims/patent is ABOVE the 4.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hamari's grants concentrate

Hamari Chemicals, Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 80% of grants classified under C07D (Heterocyclic Compounds). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2021. By volume, Hamari sits between Hagenuk KMT Kabelmesstechnik GmbH and Handbag Heidi LLC.

Hagenuk KMT Kabel…

5
Haleon UK IP

5
Halilit export 19…

5
Halo Innovative S…

5
Hamburg Innovation

5
Hammelmann

5
Hammerhead Group

5
Handbag Heidi

5
Hamari Chemicals ◀

5

What this shows Hamari holds 5 patents at rank #47,447, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hamari

By rank, the assignees closest to #47,447 in granted patent volume.

Leaders in C07D (Heterocyclic Compounds)

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

Hamari's Innovation Score vs. every tracked assignee

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

23 10th percentile higher than 10% 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

Hamari Chemicals, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	40.0%
2017	2	40.0%
2021	1	20.0%

Which technologies does Hamari Chemicals, Ltd. patent most?

C07D - Heterocyclic Compounds 4

C07B - General Methods OF Organic CHEMISTRY; Apparatus Therefor 4

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 3

C07C - Acyclic OR Carbocyclic Compounds 3

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

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

C07K - Peptides 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

Hamari Chemicals, Ltd.'s patent record in context - here's where to go next.

Hamari Chemicals, Ltd.'s lead technology class is C07D (Heterocyclic Compounds), 80% of its portfolio - see every assignee active in that class. Explore C07D
Ranked #47,297 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hamari Chemicals, Ltd. against Hagenuk KMT Kabelmesstechnik GmbH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 22.5/100 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.