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Sheboygan, WI, United States of America

Plastics Engineering Company

USPTO Granted Patents = 64

EPO Patents = 1

Trademarks = 2

Forward Citations = 748

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15 inventors (with patents filed for the assignee):

Phillip A Waitkus (41 out of 41 patents)

Gaetano F D'Alelio, Deceased (20 out of 21 patents)

Gaetano F D'Alelio (11 out of 38 patents)

4. Chung J Lee (9 out of 9 patents)

5. Louis L Korb (7 out of 7 patents)

6. Ralph T Brotz (4 out of 4 patents)

7. Bohumir B Lepeska (3 out of 3 patents)

8. Paschal A Sciarra (3 out of 3 patents)

9. Theodore N Morrison (2 out of 2 patents)

10. Yeon F Liang (2 out of 9 patents)

11. Walter J Monacelli (2 out of 2 patents)

12. Jerome C Kellner (1 out of 1 patent)

13. Lewis J Rummings (1 out of 1 patent)

14. Henry P Barker (1 out of 1 patent)

15. Keith E Lauritsen (1 out of 1 patent)

Core Competencies:

Thermosetting Compositions

Polymer Blends

Vitreous Carbon

Phenolic Resins

Polyimide Derivatives

Friction Elements

Resole Binders

Curing Processes

Thermoplastic Polyester

Fast Crystallizing Resins

Molding Methods

Di-Acetylene-Terminated Polyimide

64 patents: Sort by Forward Citations

1. 6916574 - Method for forming a fuel cell electrode using a resole binder (2005-07-12),

2. 6569918 - Polymer composition for curing novolac resins (2003-05-27),

3. 6439518 - Apparatus for camera mount on tripod platform (2002-08-27),

4. 6209830 - Apparatus for camera mount on tripod platform (2001-04-03),

5. 5750597 - Thermosetting resin compositions (1998-05-12),

6. 5714525 - Preparation of friction elements and compositions therefor (1998-02-03),

7. 5360587 - Preparation of friction elements and compositions therefor (1994-11-01),

8. 5034497 - Thermosetting compositions and molding method (1991-07-23),

9. 4952629 - Thermoplastic polyester blends (1990-08-28),

10. 4889898 - Thermoplastic polyester blends of improved impact resistance (1989-12-26),

11. 4880893 - Novel thermosetting compositions and molding method (1989-11-14),

12. 4676944 - Process for molding thin thermoset resin plates in an inverted cavity (1987-06-30),

13. 4668496 - Vitreous carbon (1987-05-26),

14. 4656239 - Process for the preparation of phenol formaldehyde resole resins (1987-04-07),

15. 4626569 - Process for producing a molded product and the molded product produced (1986-12-02),

Company Overview

Plastics Engineering Company, based in Sheboygan, Wisconsin, specializes in the development and manufacturing of advanced thermosetting compositions. The company focuses on a range of core technologies, including polymer blends, vitreous carbon, and various resin systems such as phenolic and polyimide derivatives. Their expertise extends to friction elements and resole binders, emphasizing innovative curing processes. This positions them as a key player in industries requiring high-performance materials and solutions tailored to specific engineering challenges.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

64 Patents

#3 in Sheboygan, WI

#140 in Wisconsin

#5,682 in US

#11,476 in the World

Sheboygan, WI, United States of America

Plastics Engineering Company

Forward Citations = 748

15 inventors:

Phillip A Waitkus (41 out of 41 patents)

Gaetano F D'Alelio, Deceased (20 out of 21 patents)

Gaetano F D'Alelio (11 out of 38 patents)

4. Chung J Lee (9 out of 9 patents)

5. Louis L Korb (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Plastics Engineering Company. Retrieved from https://idiyas.com/company/plastics-engineering-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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