Where does Ampac Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ampac Limited ranks #30,821 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 Ampac Limited hold?

Ampac Limited holds 8 US utility patents granted between 2015 and 2025, spanning 5 technology areas.

What is Ampac Limited's Innovation Score?

Ampac Limited has an Innovation Score of 27.4 out of 100 (24th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ampac Limited's patent grant rate increasing or decreasing?

Ampac Limited'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 Ampac Limited's patents?

Ampac Limited's patents average 19.9 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 Ampac Limited 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

Ampac Limited

Q: What technology areas does Ampac Limited focus on?

Ampac Limited's top technology area is B65D (Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages) with 6 patents, ranking #606 of 3,365 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 5 technology areas, recorded in grant years 2015–2025. 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: B65D (Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR F).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Ampac ranks #30,821 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 5 technology areas.

#30,821
of 49,997 US assignees by volume: 24th percentile
by Innovation Score (27.4/100): 19.9
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R30821 · Foreign Corporation #30,821 · 8 grants

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

GRANTS-MICRO 8 grants
MID-PACK #30,821/49,997
PHOTO-FINISH Amino UP Chemical
CPC-NARROW B65D · 5 areas
INNOV-THIN 27.4/100
CLAIMS-RICH 19.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Amino UP Chemical 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 Ampac’s 27.4 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 (28%) Velocity 0.0 pts (0%) Breadth 7.9 pts (29%) Claim depth 11.9 pts (43%)

Qualcomm Incorporated · highest

85
Ampac · this assignee

27
3D Lighting… · lowest

7

What this shows Ampac's Innovation Score is 27.4/100 (24th 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 Ampac?

Each dot is one of Ampac’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). Ampac’s own 19.9 claims/patent is ABOVE the 10.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Ampac's grants concentrate

Ampac Limited is a focused PatentsView assignee: 5 CPC subclasses with 75% of grants classified under B65D (Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR F). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2016. By volume, Ampac sits between Amino UP Chemical Co., Ltd. and Analogix International LLC.

Amino UP Chemical

8
Aminologics

8
Amira Pharmaceuti…

8
Amita

8
Ampsource Biophar…

8
Amvalor

8
Anaergia B V

8
Analogix Internat…

8
Ampac ◀

8

What this shows Ampac holds 8 patents at rank #30,770, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ampac

By rank, the assignees closest to #30,770 in granted patent volume.

Leaders in B65D (Containers FOR Storage OR Transport OF Articles OR Materials)

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

Ampac's Innovation Score vs. every tracked assignee

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

27 24th percentile higher than 24% 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 · 2015–2025

Grants by year

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

View data table

Ampac Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	25.0%
2016	1	12.5%
2017	2	25.0%
2018	1	12.5%
2019	1	12.5%
2025partial year	1	12.5%

Which technologies does Ampac Limited patent most?

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 6

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 3

B31B - Making Containers OF Paper, Cardboard OR Material Worked IN A Manner Analogous TO Paper 3

B65B - Machines, Apparatus OR Devices FOR, OR Methods OF, Packaging Articles OR MATERIALS; Unpacking 2

A45D - Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring 1

Top 5 of 5 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

Ampac Limited's patent record in context - here's where to go next.

Ampac Limited's lead technology class is B65D (Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR F), 75% of its portfolio - see every assignee active in that class. Explore B65D
Ranked #30,821 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ampac Limited against Amino UP Chemical Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.4/100 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.