Where does Harper Engineering Co. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Harper Engineering Co. ranks #22,695 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 Harper Engineering Co. hold?

Harper Engineering Co. holds 12 US utility patents granted between 2016 and 2025, spanning 19 technology areas.

What is Harper Engineering Co.'s Innovation Score?

Harper Engineering Co. has an Innovation Score of 36.2 out of 100 (top 47% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Harper Engineering Co.'s patent grant rate increasing or decreasing?

Harper Engineering Co.'s recent grant velocity is +75% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Harper Engineering Co.'s patents?

Harper Engineering Co.'s patents average 16.2 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 Harper Engineering Co. 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

Harper Engineering Co.

Q: What technology areas does Harper Engineering Co. focus on?

Harper Engineering Co.'s top technology area is B64D (EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT) with 9 patents. Grants appear in 19 CPC subclasses total.

USPTO PatentsView assignee record - 12 granted patents across 19 technology areas, recorded in grant years 2016–2025. 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: B64D (EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Harper ranks #22,695 of 50,000 tracked US assignees by granted-patent volume, with 12 patents across 19 technology areas.

#22,695
of 50,000 US assignees by volume: Top 47%
by Innovation Score (36.2/100): 16.2
avg claims per patent: +75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22695 · US Corporation #22,695 · 12 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 12 grants
MID-PACK #22,695/50,000
PHOTO-FINISH Hamilton Internation…
CPC-FOCUS B64D · 19 areas
INNOV-THIN 36.2/100
CLAIMS-RICH 16.2 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hamilton International Ag (hamilton International Sa) (hamilton International 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.

Qualcomm Incorporated · highest

85
Harper Engineering · this assignee

36
3D Lighting Innovati… · lowest

7

What this shows Harper's Innovation Score is 36.2/100 (top 47% 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.

Where Harper's grants concentrate

Harper Engineering Co. is a focused PatentsView assignee: 19 CPC subclasses with 75% of grants classified under B64D (EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT). Peak complete grant year is 2020 (4 grants) versus a trough of 1 in 2016. By volume, Harper sits between Hamilton International Ag (hamilton International Sa) (hamilton International Ltd.) and Hebei Fenger Intelligent Technology Co., Ltd.

Hamilton Internat…

12
Hansen Internatio…

12
Hanuman Pelican

12
Hanwha Ocean

12
Hasse & Wrede

12
Hatch Baby

12
Head's Select

12
Hebei Fenger Inte…

12
Harper Engineering ◀

12

What this shows Harper holds 12 patents at rank #22,715, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Harper

By rank, the assignees closest to #22,715 in granted patent volume.

Leaders in B64D (Equipment FOR Fitting IN OR TO Aircraft)

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

Harper's Innovation Score vs. every tracked assignee

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

36 Top 47% higher than 53% of 50,000 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Harper Engineering Co. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	8.3%
2017	2	16.7%
2019	1	8.3%
2020	4	33.3%
2021	1	8.3%
2022	2	16.7%
2025partial year	1	8.3%

Which technologies does Harper Engineering Co. patent most?

B64D - EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT 9

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 6

E05Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF 5

E05D - HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS 5

E05F - DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING 5

F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 4

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 3

E05B - LOCKS; ACCESSORIES THEREFOR; HANDCUFFS 2

B21D - WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL 2

B23P - METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 2

B64C - AEROPLANES; HELICOPTERS 2

E04C - STRUCTURAL ELEMENTS; BUILDING MATERIALS 2

E04B - GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 2

B60N - SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR 1

B64F - GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDE 1

Top 15 of 19 technology areas

Where it ranks

Overall rank by patents

#22,695

of 50,000 tracked assignees

Innovation Score

36.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.