USPTO 2015–2025 USPTO PatentsView US Corporation

Guill Tool & Engineering Co., Inc.

USPTO PatentsView assignee record - 39 granted patents across 19 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.1

Avg claims per patent

+29%

5-year filing velocity

The verdict

Guill holds 39 US patents across 19 technology areas, rank #8,215 of 50,000 tracked assignees.

#8,215
of 50,000 US assignees by volume: Top 46%
by Innovation Score (36.6/100): 9.1
avg claims per patent: +29%
filing velocity, last 5 yrs

Portfolio overview

Guill Tool & Engineering Co., Inc. has been granted 39 US utility patents between 2015 and 2025, placing Guill Tool & Engineering Co., Inc. at rank #8,215 across all assignees tracked by PlainPatent. This portfolio spans 19 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.1 claims per patent with primary concentration in 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). As a US Corporation, Guill Tool & Engineering Co., Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Guill sits between Gauss Surgical Inc. (39 patents, rank #8,211) and Honey-can-do International, Llc (39 patents, rank #8,219) - the closest US assignees by grant volume. The composite Innovation Score of 36.6/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 22 grants, compared with 17 in the 2015–2019 window, a +29% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Guill Tool & Engineering Co., Inc.'s 9.1 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 19 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Guill Tool & Engineering Co., Inc. against peers pursuing similar technology classes.

Gauss Surgical

39
Gen9

39
Goodrich Lighting…

39
Gooee

39
Herrmann Ultrasch…

39
Hitachi Informati…

39
Hannstar Display…

39
Honey-can-do Inte…

39
Guill Tool & Engi… ◀

39

What this shows Guill holds 39 patents at rank #8,215, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Guill

By rank, the assignees closest to #8,215 in granted patent volume.

Leaders in B29C (Shaping OR Joining OF Plastics)

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

Guill's Innovation Score vs. every tracked assignee

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

37 Top 46% higher than 54% 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 · 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

Guill Tool & Engineering Co., Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	2.6%
2016	1	2.6%
2017	2	5.1%
2018	5	12.8%
2019	8	20.5%
2020	9	23.1%
2021	3	7.7%
2022	4	10.3%
2023	4	10.3%
2024	1	2.6%
2025	1	2.6%

Which technologies does Guill Tool & Engineering Co., Inc. patent most?

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 36

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 18

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 16

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 12

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 10

B29D - PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE 9

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 5

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 5

B30B - PRESSES IN GENERAL 4

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 4

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 4

H05F - STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY 4

H01B - CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES 4

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 3

A61J - CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE 3

Top 15 of 19 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#8,215

Across all tracked assignees

Innovation Score

36.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Guill Tool & Engineering Co., Inc. hold?

Guill Tool & Engineering Co., Inc. holds 39 US granted patents filed between 2015 and 2025, spanning 19 technology areas.

What is Guill Tool & Engineering Co., Inc.'s Innovation Score?

Guill Tool & Engineering Co., Inc. has an Innovation Score of 36.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Guill Tool & Engineering Co., Inc. focus on?

Guill Tool & Engineering Co., Inc.'s top technology area is 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) with 36 patents. The company has filed patents in 19 CPC subclasses total.

Is Guill Tool & Engineering Co., Inc.'s patent filing rate increasing or decreasing?

Guill Tool & Engineering Co., Inc.'s recent filing velocity is +29% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Guill Tool & Engineering Co., Inc.'s patents?

Guill Tool & Engineering Co., Inc.'s patents average 9.1 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Guill Tool & Engineering Co., Inc. 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.

How to use this portfolio

Guill's 39 grants land it in the top 46% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Guill ranks #8,215 of 50,000. Top 50 holders
Most of this portfolio concentrates in B29C - see who else leads that technology area. B29C leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.