Where does Hangzhou Silan Integrated Circuit Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hangzhou Silan Integrated Circuit Co., Ltd. ranks #31,865 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 Hangzhou Silan Integrated Circuit Co., Ltd. hold?

Hangzhou Silan Integrated Circuit Co., Ltd. holds 8 US utility patents granted between 2017 and 2022, spanning 8 technology areas.

What is Hangzhou Silan Integrated Circuit Co., Ltd.'s Innovation Score?

Hangzhou Silan Integrated Circuit Co., Ltd. has an Innovation Score of 30.4 out of 100 (34th 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 Hangzhou Silan Integrated Circuit Co., Ltd. focus on?

Hangzhou Silan Integrated Circuit Co., Ltd.'s top technology area is B81B (Microstructural Devices OR Systems, e.g. Micromechanical Devices) with 5 patents, ranking #108 of 372 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Hangzhou Silan Integrated Circuit Co., Ltd.'s patent grant rate increasing or decreasing?

Hangzhou Silan Integrated Circuit Co., Ltd.'s recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Hangzhou Silan Integrated Circuit Co., Ltd.'s patents?

Hangzhou Silan Integrated Circuit Co., Ltd.'s patents average 19.1 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 Hangzhou Silan Integrated Circuit Co., 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

Hangzhou Silan Integrated Circuit Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 8 technology areas, recorded in grant years 2017–2022. 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: B81B (Microstructural Devices OR Systems, e.g. Micromechanical Devices).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hangzhou ranks #31,865 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 8 technology areas.

#31,865
of 49,997 US assignees by volume: 34th percentile
by Innovation Score (30.4/100): 19.1
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31865 · Foreign Corporation #31,865 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #31,865/49,997
PHOTO-FINISH Hachimantai City
CPC-NARROW B81B · 8 areas
INNOV-THIN 30.4/100
CLAIMS-RICH 19.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hachimantai City (±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 Hangzhou’s 30.4 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 7.6 pts (25%) Velocity 1.3 pts (4%) Breadth 10.0 pts (33%) Claim depth 11.5 pts (38%)

Qualcomm Incorporated · highest

85
Hangzhou Silan… · this assignee

30
3D Lighting… · lowest

7

What this shows Hangzhou's Innovation Score is 30.4/100 (34th 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 Hangzhou?

Each dot is one of Hangzhou’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). Hangzhou’s own 19.1 claims/patent is ABOVE the 14.6 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hangzhou's grants concentrate

Hangzhou Silan Integrated Circuit Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 62.5% of grants classified under B81B (Microstructural Devices OR Systems, e.g. Micromechanical Devices). Peak complete grant year is 2019 (2 grants) versus a trough of 1 in 2017. By volume, Hangzhou sits between Hachimantai City and Harbo Technologies Ltd..

Hangzhou's three-year grant acceleration

Hangzhou Silan Integrated Circuit Co., Ltd. shows 1 grants in 2022–2024 against only 5 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.

Hachimantai City

8
Haldor Advanced

8
Hallstar Beauty A…

8
Hangerlogic

8
Hangzhou Xinglu

8
Hanmega

8
Haptx

8
Harbo

8
Hangzhou Silan In… ◀

8

What this shows Hangzhou holds 8 patents at rank #31,858, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hangzhou

By rank, the assignees closest to #31,858 in granted patent volume.

Leaders in B81B (Microstructural Devices OR Systems)

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

Hangzhou's Innovation Score vs. every tracked assignee

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

30 34th percentile higher than 34% 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 · 2017–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Hangzhou Silan Integrated Circuit Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	12.5%
2018	1	12.5%
2019	2	25.0%
2020	1	12.5%
2021	2	25.0%
2022	1	12.5%

Which technologies does Hangzhou Silan Integrated Circuit Co., Ltd. patent most?

B81B - Microstructural Devices OR Systems, e.g. Micromechanical Devices 5

B81C - Processes OR Apparatus Specially Adapted FOR THE Manufacture OR Treatment OF Microstructural Devices OR Systems 5

H10D - Inorganic Electric Semiconductor Devices 3

H01L - Semiconductor Devices NOT Covered BY Class H10 3

H02N - Electric Machines NOT Otherwise Provided FOR 2

H03H - Impedance Networks, e.g. Resonant CIRCUITS; Resonators 1

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 1

H04R - Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems 1

Top 8 of 8 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

Hangzhou Silan Integrated Circuit Co., Ltd.'s patent record in context - here's where to go next.

Hangzhou Silan Integrated Circuit Co., Ltd.'s lead technology class is B81B (Microstructural Devices OR Systems, e.g. Micromechanical Devices), 62.5% of its portfolio - see every assignee active in that class. Explore B81B
Ranked #31,865 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hangzhou Silan Integrated Circuit Co., Ltd. against Hachimantai City, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.4/100 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.