Where does International Rectifier Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), International Rectifier Corporation ranks #4,887 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 International Rectifier Corporation hold?

International Rectifier Corporation holds 71 US utility patents granted between 2015 and 2015, spanning 18 technology areas.

What is International Rectifier Corporation's Innovation Score?

International Rectifier Corporation has an Innovation Score of 40.7 out of 100 (top 35% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does International Rectifier Corporation focus on?

International Rectifier Corporation's top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 52 patents, ranking #302 of 3,373 assignees active in that subclass. Grants appear in 18 CPC subclasses total.

Is International Rectifier Corporation's patent grant rate increasing or decreasing?

International Rectifier 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 International Rectifier Corporation's patents?

International Rectifier Corporation's patents average 18.2 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 International Rectifier 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

International Rectifier Corporation

USPTO PatentsView assignee record - 71 granted patents across 18 technology areas, recorded in grant years 2015–2015. 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, International ranks #4,887 of 49,997 tracked US assignees by granted-patent volume, with 71 patents across 18 technology areas.

#4,887
of 49,997 US assignees by volume: Top 35%
by Innovation Score (40.7/100): 18.2
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4887 · US Corporation #4,887 · 71 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 71 grants
TOP-DECILE #4,887/49,997
PHOTO-FINISH Hefei Midea…
CPC-FOCUS H01L · 18 areas
INNOV-PAR 40.7/100
CLAIMS-RICH 18.2 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hefei Midea Refrigerator Co., Ltd. (±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 International’s 40.7 Innovation Score adds up

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

Volume 14.8 pts (36%) Velocity 0.0 pts (0%) Breadth 15.0 pts (37%) Claim depth 10.9 pts (27%)

Qualcomm Incorporated · highest

85
HS Marston Aerospace · near

41
International… · this assignee

41
Ubiquiti Networks · near

41
Zimmer Biomet CMF… · near

41
Unilin Bvba · near

41
3D Lighting… · lowest

7

What this shows International's Innovation Score is 40.7/100 (top 35% 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 International?

Each dot is one of International’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). International’s own 18.2 claims/patent is ABOVE the 12.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where International's grants concentrate

International Rectifier Corporation is a focused PatentsView assignee: 18 CPC subclasses with 73.2% of grants classified under H01L (Semiconductor Devices NOT Covered BY Class H10). By volume, International sits between Hefei Midea Refrigerator Co., Ltd. and Klein Tools, Inc..

Hefei Midea Refri…

71
Heineken Supply C…

71
Hyperfine Research

71
Innoplexus

71
Inventus Holdings

71
Io Therapeutics

71
Kikkoman

71
Klein Tools

71
International Rec… ◀

71

What this shows International holds 71 patents at rank #4,887, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near International

By rank, the assignees closest to #4,887 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for International, neither rank-band nor same-CPC leaders (those blocks stay above). In H01L (Semiconductor Devices NOT Covered BY Class H10), International ranks #302 of 3,373 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (41 here).

Ubiquiti Networks, Inc. 41 Zimmer Biomet CMF and Thoracic, LLC 41 HS Marston Aerospace Limited 41 Unilin Bvba 41

Similar claim depth

Nearest assignees by average claims per patent (18.2 here).

Jade Bird Display (Shanghai) Limited 18.2 avg MobiTV, Inc. 18.2 avg WIN Semiconductors Corp. 18.2 avg Cenovus Energy Inc. 18.2 avg

International's Innovation Score vs. every tracked assignee

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

41 Top 35% higher than 65% 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

Grants by year

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

View data table

International Rectifier Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	71	100.0%

Which technologies does International Rectifier Corporation patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 52

H10D - Inorganic Electric Semiconductor Devices 39

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 10

H03K - Pulse Technique 9

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 6

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 6

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 5

Y10T - Technical Subjects Covered BY Former US Classification 5

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 2

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 2

Y02T - Climate Change Mitigation Technologies Related TO Transportation 2

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 2

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 1

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 1

H03L - Automatic Control, Starting, Synchronisation OR Stabilisation OF Generators OF Electronic Oscillations OR Pulses 1

Top 15 of 18 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

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

International Rectifier Corporation's lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 73.2% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #4,887 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare International Rectifier Corporation against Hefei Midea Refrigerator Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.7/100 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

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.