Where does Hemlock Semiconductor Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hemlock Semiconductor Corporation ranks #40,682 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 Hemlock Semiconductor Corporation hold?

Hemlock Semiconductor Corporation holds 6 US utility patents granted between 2015 and 2019, spanning 17 technology areas.

What is Hemlock Semiconductor Corporation's Innovation Score?

Hemlock Semiconductor Corporation has an Innovation Score of 30.1 out of 100 (33rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hemlock Semiconductor Corporation's patent grant rate increasing or decreasing?

Hemlock Semiconductor Corporation'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 Hemlock Semiconductor Corporation's patents?

Hemlock Semiconductor Corporation's patents average 14.7 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 Hemlock Semiconductor 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

Hemlock Semiconductor Corporation

Q: What technology areas does Hemlock Semiconductor Corporation focus on?

Hemlock Semiconductor Corporation's top technology area is C30B (Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI) with 2 patents, ranking #198 of 414 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 17 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: C30B (Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrys).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hemlock ranks #40,682 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 17 technology areas.

#40,682
of 49,997 US assignees by volume: 33rd percentile
by Innovation Score (30.1/100): 14.7
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R40682 · US Corporation #40,682 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #40,682/49,997
PHOTO-FINISH Hebei University OF…
CPC-FOCUS C30B · 17 areas
INNOV-THIN 30.1/100
CLAIMS-RICH 14.7 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hebei University OF Technology (±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 Hemlock’s 30.1 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 (22%) Velocity 0.0 pts (0%) Breadth 14.6 pts (49%) Claim depth 8.8 pts (29%)

Qualcomm Incorporated · highest

85
Hemlock Semiconductor · this assignee

30
3D Lighting… · lowest

7

What this shows Hemlock's Innovation Score is 30.1/100 (33rd 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 Hemlock?

Each dot is one of Hemlock’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). Hemlock’s own 14.7 claims/patent is ABOVE the 10.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hemlock's grants concentrate

Hemlock Semiconductor Corporation is a focused PatentsView assignee: 17 CPC subclasses with 33.3% of grants classified under C30B (Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrys). Peak complete grant year is 2015 (3 grants) versus a trough of 1 in 2016. By volume, Hemlock sits between Hebei University OF Technology and Heraeus Battery Technology GMBH.

Hebei University…

6
Heemskerk Vastepl…

6
Helbio

6
Helena Laboratori…

6
Hemotek

6
Henan Genuine Bio…

6
Henan University…

6
Heraeus Battery T…

6
Hemlock Semicondu… ◀

6

What this shows Hemlock holds 6 patents at rank #40,625, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hemlock

By rank, the assignees closest to #40,625 in granted patent volume.

Leaders in C30B (Single-crystal Growth)

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

Hemlock's Innovation Score vs. every tracked assignee

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

30 33rd percentile higher than 33% 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

Hemlock Semiconductor Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	50.0%
2016	1	16.7%
2017	1	16.7%
2019	1	16.7%

Which technologies does Hemlock Semiconductor Corporation patent most?

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 2

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

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 1

Y10T - Technical Subjects Covered BY Former US Classification 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 1

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 1

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 1

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 15 of 17 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

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

Hemlock Semiconductor Corporation's lead technology class is C30B (Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrys), 33.3% of its portfolio - see every assignee active in that class. Explore C30B
Ranked #40,682 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hemlock Semiconductor Corporation against Hebei University OF Technology, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.1/100 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.