Where does SDI Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), SDI Corporation ranks #14,917 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 SDI Corporation hold?

SDI Corporation holds 20 US utility patents granted between 2015 and 2020, spanning 8 technology areas.

What is SDI Corporation's Innovation Score?

SDI Corporation has an Innovation Score of 31.3 out of 100 (37th 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 SDI Corporation focus on?

SDI Corporation's top technology area is B43L (Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing) with 6 patents, ranking #7 of 54 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is SDI Corporation's patent grant rate increasing or decreasing?

SDI Corporation's recent grant velocity is -89% 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 SDI Corporation's patents?

SDI Corporation's patents average 17.9 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 SDI 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 Foreign Corporation

SDI Corporation

USPTO PatentsView assignee record - 20 granted patents across 8 technology areas, recorded in grant years 2015–2020. 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: B43L (Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, SDI ranks #14,917 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 8 technology areas.

#14,917
of 49,997 US assignees by volume: 37th percentile
by Innovation Score (31.3/100): 17.9
avg claims per patent: -89%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14917 · Foreign Corporation #14,917 · 20 grants

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

GRANTS-SMALL 20 grants
MID-PACK #14,917/49,997
PHOTO-FINISH San-ei GEN F F I
CPC-NARROW B43L · 8 areas
INNOV-THIN 31.3/100
CLAIMS-RICH 17.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -89% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: San-ei GEN F.F.I., Inc. (±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 SDI’s 31.3 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 10.5 pts (34%) Velocity 0.0 pts (0%) Breadth 10.0 pts (32%) Claim depth 10.8 pts (35%)

Qualcomm Incorporated · highest

85
SDI · this assignee

31
3D Lighting… · lowest

7

What this shows SDI's Innovation Score is 31.3/100 (37th 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 SDI?

Each dot is one of SDI’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). SDI’s own 17.9 claims/patent is ABOVE the 9.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where SDI's grants concentrate

SDI Corporation is a focused PatentsView assignee: 8 CPC subclasses with 30% of grants classified under B43L (Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing). Peak complete grant year is 2015 (7 grants) versus a trough of 1 in 2019. By volume, SDI sits between San-ei GEN F.F.I., Inc. and Semitec Corporation.

San-ei GEN F F I

20
Sankyo Seisakusho

20
Sanvean

20
Savoye

20
Sega

20
Sega Sammy Creati…

20
Selex ES S P A

20
Semitec

20
SDI ◀

20

What this shows SDI holds 20 patents at rank #14,911, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SDI

By rank, the assignees closest to #14,911 in granted patent volume.

Leaders in B43L (Articles FOR Writing OR Drawing UPON)

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

SDI's Innovation Score vs. every tracked assignee

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

31 37th percentile higher than 37% 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 · 2015–2020

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

SDI Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	7	35.0%
2016	4	20.0%
2017	4	20.0%
2018	2	10.0%
2019	1	5.0%
2020	2	10.0%

Which technologies does SDI Corporation patent most?

B43L - Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing 6

B43K - Implements FOR Writing OR Drawing 5

B26B - Hand-held Cutting Tools NOT Otherwise Provided FOR 4

B25C - Hand-held Nailing OR Stapling TOOLS; Manually Operated Portable Stapling Tools 2

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 2

Y10T - Technical Subjects Covered BY Former US Classification 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

A61B - DIAGNOSIS; SURGERY; Identification 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

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

SDI Corporation's lead technology class is B43L (Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing), 30% of its portfolio - see every assignee active in that class. Explore B43L
Ranked #14,917 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare SDI Corporation against San-ei GEN F.F.I., Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.3/100 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.