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For the Inventor, By the Inventor

Chippewa Falls, WI, United States of America

Extrusion Dies, Inc.

USPTO Granted Patents = 15


Forward Citations = 177

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11 inventors (with patents filed for the assignee):

goldMedal Vernon J Krupa (7 out of 7 patents)

silverMedal Harry G Lippert (7 out of 7 patents)

bronzeMedal John A Ulcej (5 out of 12 patents)

4.  Donald R Garton (4 out of 4 patents)

5.  Gregory M Wilson (3 out of 8 patents)

6.  John W Ryan (2 out of 2 patents)

7.  Dale Pitsch (1 out of 12 patents)

8.  Brian M Pitsch (1 out of 5 patents)

9.  F John Herrington (1 out of 8 patents)

10.  John A Ulcei (1 out of 1 patent)

11.  Jeffrey M Seckora (1 out of 1 patent)


15 patents:

1. 6663375 - Dual flexible lip extrusion apparatus with pivoting actuation member (2003-12-16),
2. 6626206 - Feedblock for adjusting the dimensions of a set of co-extruded layers of a multi-layer sheet (2003-09-30),
3. 6367776 - Flow control device and apparatus for mounting same (2002-04-09),
4. 6352424 - Extrusion die membrane assembly (2002-03-05),
5. 6206680 - Extrusion die membrane (2001-03-27),
6. 6109592 - Flow control device and apparatus for mounting same (2000-08-29),
7. 5962041 - Dual flexible lip extrusion apparatus (1999-10-05),
8. 5780067 - Adjustable coextrusion feedblock (1998-07-14),
9. 5770240 - Extrusion die for rigid foam sheet (1998-06-23),
10. 5679383 - Dual flexible lip extrusion apparatus (1997-10-21),
11. 5618568 - Dual-chamber vacuum box (1997-04-08),
12. 5511962 - Extrusion die (1996-04-30),
13. 5494429 - Apparatus for extruding thermoplastic materials (1996-02-27),
14. 5375990 - Feed block for coextrusion apparatus (1994-12-27),
15. 5067432 - Replaceable wiping insert for slot die head (1991-11-26),
Company Overview
Extrusion Dies, Inc. specializes in the design and manufacturing of high-performance extrusion dies and related tooling for various industries, including plastics and rubber. The company is known for its innovative solutions that enhance production efficiency and product quality. With a focus on advanced engineering and precision manufacturing, Extrusion Dies, Inc. serves a global market from its headquarters in Chippewa Falls, Wisconsin, contributing significantly to the evolution of extrusion technology.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#1 in Chippewa Falls, WI

#486 in Wisconsin

#21,068 in US

#39,959 in the World

Chippewa Falls, WI (US)
Chippewa Falls, WI, United States of America

Extrusion Dies, Inc.

Forward Citations = 177

11 inventors:

goldMedal Vernon J Krupa (7 out of 7 patents)

silverMedal Harry G Lippert (7 out of 7 patents)

bronzeMedal John A Ulcej (5 out of 12 patents)

4.  Donald R Garton (4 out of 4 patents)

5.  Gregory M Wilson (3 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Extrusion Dies, Inc.. Retrieved from https://idiyas.com/company/extrusion-dies

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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