PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sigmastar Technology Ltd.

USPTO PatentsView assignee record - 55 granted patents across 22 technology areas, recorded in grant years 2021–2025. 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: G06F (ELECTRIC DIGITAL DATA PROCESSING).

Explore the portfolio See the ranking
55
Total patents granted
22
CPC technology areas
12.7
Avg claims per patent
-
5-year grant velocity

The verdict

According to USPTO PatentsView, Sigmastar ranks #6,188 of 50,000 tracked US assignees by granted-patent volume, with 55 patents across 22 technology areas.

#6,188
of 50,000 US assignees by volume
Top 5%
by Innovation Score (58.1/100)
12.7
avg claims per patent

Portfolio overview

Sigmastar Technology Ltd. has been granted 55 US utility patents between 2021 and 2025, placing Sigmastar Technology Ltd. at #6,188 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 22 distinct Cooperative Patent Classification (CPC) subclasses, averaging 12.7 claims per patent with primary concentration in G06F (ELECTRIC DIGITAL DATA PROCESSING). As a Foreign Corporation, Sigmastar Technology Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Sigmastar sits between Roche Glycart Ag (55 patents, rank #6,183) and Thales Canada Inc. (55 patents, rank #6,191) - the closest US assignees by grant volume. The composite Innovation Score of 58.1/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Historical data spans 2021 through 2025, with 55 total grants over that period. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Sigmastar Technology Ltd.'s 12.7 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 22 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Who files at Sigmastar's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Sigmastar holds 55 patents at rank #6,187, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Sigmastar

By rank, the assignees closest to #6,187 in granted patent volume.

Leaders in G06F (Electric Digital DATA Processing)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sigmastar, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (58 here).

Knauf Insulation, Inc. 58 Goodrich Lighting Systems Gmbh & Co. KG 58 Roquette Freres 58 Infosys Limited 58

Similar claim depth

Nearest assignees by average claims per patent (12.7 here).

Howmet Aerospace Inc. 12.7 avg LWRC International Llc 12.7 avg Guangzhou Automobile Group Co., Ltd. 12.7 avg Unirac, Inc. 12.7 avg

Sigmastar's Innovation Score vs. every tracked assignee

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

58 Top 5% higher than 95% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). This entry sits in this band. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

0102030 20212022202320242025 24
USPTO utility patent grants by year · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table
Sigmastar Technology Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2021 1 1.8%
2022 6 10.9%
2023 8 14.5%
2024 16 29.1%
2025partial year 24 43.6%

Which technologies does Sigmastar Technology Ltd. patent most?

Top 15 of 22 technology areas

Grant record at a glance

Portfolio Volume 55 grants
CPC subclasses 22
Avg. claims / grant 12.7

Historical grant data only; it does not rate legal strength or current strategy.

Where it ranks

Overall rank by patents

#6,188

of 50,000 tracked assignees

Innovation Score

58.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

Where does Sigmastar Technology Ltd. rank among US patent assignees?
According to USPTO PatentsView (2015–2025 granted utility patents), Sigmastar Technology Ltd. ranks #6,188 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.
How many patents does Sigmastar Technology Ltd. hold?
Sigmastar Technology Ltd. holds 55 US utility patents granted between 2021 and 2025, spanning 22 technology areas.
What is Sigmastar Technology Ltd.'s Innovation Score?
Sigmastar Technology Ltd. has an Innovation Score of 58.1 out of 100 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Sigmastar Technology Ltd. focus on?
Sigmastar Technology Ltd.'s top technology area is G06F (ELECTRIC DIGITAL DATA PROCESSING) with 22 patents. Grants appear in 22 CPC subclasses total.
Is Sigmastar Technology Ltd.'s patent grant rate increasing or decreasing?
Insufficient historical data is available to calculate a velocity trend for Sigmastar Technology Ltd..
What does claim depth mean for Sigmastar Technology Ltd.'s patents?
Sigmastar Technology Ltd.'s patents average 12.7 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 Sigmastar Technology 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.

How to use this portfolio

Sigmastar's 55 grants land it in the top 5% by Innovation Score, but volume alone doesn't tell you where the strength sits.

  • Read that count against the largest US assignees before treating it as dominance - Sigmastar ranks #6,188 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in G06F - see who else leads that technology area. G06F leaders
  • Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

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

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.