PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hunan Sijiu Technology Co., Ltd.

USPTO PatentsView assignee record - 7 granted patents across 3 technology areas, recorded in grant years 2022–2025. 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: B41F (Printing Machines OR Presses).

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The verdict

According to USPTO PatentsView, Hunan ranks #35,755 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 3 technology areas.

#35,755
of 49,997 US assignees by volume
48th percentile
by Innovation Score (34.7/100)
2.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R35755 · Foreign Corporation #35,755 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

  • GRANTS-MICRO 7 grants
  • MID-PACK #35,755/49,997
  • PHOTO-FINISH Huddle Room…
  • CPC-NARROW B41F · 3 areas
  • INNOV-THIN 34.7/100
  • CLAIMS-SPARSE 2.3 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • SPAN-YRS 2022–2025 · 4y
  • BOOK-RICH 9/10 fields

Nearest grant-volume peer: Huddle Room Technology S.R.L. (±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 Hunan’s 34.7 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Hunan

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Hunan's Innovation Score is 34.7/100 (48th 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.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Hunan?

Each dot is one of Hunan’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). Hunan’s own 2.3 claims/patent is at or below the 12.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Hunan vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 6.97.07.077.07.07.1 051015202530 Granted patents (volume) Avg claims / patent Huddle Room Technology S.R.L. - 7, 11Huddle Room Techn…Hultafors Group AB - 7, 8.57Hultafors Group ABHuman Design Medical, LLC - 7, 13.86Human Design Medi…Humanitas Mirasole S.P.A. - 7, 12.14Humanitas Mirasol…Hunkeler AG - 7, 12.57HunkelerHuntington Alloys Corporation - 7, 24.71Huntington AlloysHWA Meei Optical Co., Ltd. - 7, 8.86HWA Meei OpticalHydac Fluidcarecenter GMBH - 7, 15.14Hydac Fluidcarece…Hunan Sijiu Technology Co., Ltd. - 7, 2.29Hunan Sijiu Techn…
Hunan vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Hunan's grants concentrate

Hunan Sijiu Technology Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 14.3% of grants classified under B41F (Printing Machines OR Presses). Peak complete grant year is 2024 (2 grants) versus a trough of 1 in 2022. By volume, Hunan sits between Huddle Room Technology S.R.L. and Hydac Fluidcarecenter GMBH.

Hunan's three-year grant acceleration

Hunan Sijiu Technology Co., Ltd. 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.

Who files at Hunan's volume?

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

patents

What this shows Hunan holds 7 patents at rank #35,672, 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 Hunan

By rank, the assignees closest to #35,672 in granted patent volume.

Leaders in B41F (Printing Machines OR Presses)

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

Hunan's Innovation Score vs. every tracked assignee

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

35 48th percentile higher than 48% of 49,997 US assignees

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

012345 202220242025 4
USPTO utility patent grants by year · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table
Hunan Sijiu Technology Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2022 1 14.3%
2024 2 28.6%
2025partial year 4 57.1%

Which technologies does Hunan Sijiu Technology Co., Ltd. patent most?

Top 3 of 3 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

Hunan Sijiu Technology Co., Ltd.'s patent record in context - here's where to go next.

  • Hunan Sijiu Technology Co., Ltd.'s lead technology class is B41F (Printing Machines OR Presses), 14.3% of its portfolio - see every assignee active in that class. Explore B41F
  • Ranked #35,755 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Hunan Sijiu Technology Co., Ltd. against Huddle Room Technology S.R.L., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 34.7/100 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

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.