Where does American Cast Iron Pipe Company rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), American Cast Iron Pipe Company ranks #44,662 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 American Cast Iron Pipe Company hold?

American Cast Iron Pipe Company holds 5 US utility patents granted between 2019 and 2021, spanning 2 technology areas.

What is American Cast Iron Pipe Company's Innovation Score?

American Cast Iron Pipe Company has an Innovation Score of 19.5 out of 100 (6th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is American Cast Iron Pipe Company's patent grant rate increasing or decreasing?

American Cast Iron Pipe Company's recent grant velocity is -33% 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 American Cast Iron Pipe Company's patents?

American Cast Iron Pipe Company's patents average 13.8 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 American Cast Iron Pipe Company 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

American Cast Iron Pipe Company

Q: What technology areas does American Cast Iron Pipe Company focus on?

American Cast Iron Pipe Company's top technology area is F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General) with 5 patents, ranking #419 of 1,907 assignees active in that subclass. Grants appear in 2 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 2 technology areas, recorded in grant years 2019–2021. 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: F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, American ranks #44,662 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 2 technology areas.

#44,662
of 49,997 US assignees by volume: 6th percentile
by Innovation Score (19.5/100): 13.8
avg claims per patent: -33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44662 · US Corporation #44,662 · 5 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-RICH · TYPE-USCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 5 grants
LOWER-Q #44,662/49,997
PHOTO-FINISH Amdt Holdings
CPC-NARROW F16L · 2 areas
INNOV-LOW 19.5/100
CLAIMS-RICH 13.8 claims/avg
TYPE-USCORP US Corporation
VEL-DOWN -33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Amdt Holdings, 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 American’s 19.5 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 6.2 pts (32%) Velocity 0.0 pts (0%) Breadth 5.0 pts (26%) Claim depth 8.3 pts (43%)

Qualcomm Incorporated · highest

85
American Cast Iron… · this assignee

19
3D Lighting… · lowest

7

What this shows American's Innovation Score is 19.5/100 (6th 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 American?

Each dot is one of American’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). American’s own 13.8 claims/patent is at or below the 19.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where American's grants concentrate

American Cast Iron Pipe Company is a focused PatentsView assignee: 2 CPC subclasses with 100% of grants classified under F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2020. By volume, American sits between Amdt Holdings, Inc. and Amerilab Technologies, Inc..

Amdt Holdings

5
Amei

5
American Audio Co…

5
American Biocarbon

5
American Family M…

5
American National…

5
Amerihua Internat…

5
Amerilab

5
American Cast Iro… ◀

5

What this shows American holds 5 patents at rank #44,524, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near American

By rank, the assignees closest to #44,524 in granted patent volume.

Leaders in F16L (Pipes)

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

American's Innovation Score vs. every tracked assignee

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

19 6th percentile higher than 6% 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 · 2019–2021

Grants by year

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

View data table

American Cast Iron Pipe Company patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	3	60.0%
2020	1	20.0%
2021	1	20.0%

Which technologies does American Cast Iron Pipe Company patent most?

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 5

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

Top 2 of 2 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

American Cast Iron Pipe Company's patent record in context - here's where to go next.

American Cast Iron Pipe Company's lead technology class is F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General), 100% of its portfolio - see every assignee active in that class. Explore F16L
Ranked #44,662 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare American Cast Iron Pipe Company against Amdt Holdings, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 19.5/100 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.