Forward Citations = 121

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4 inventors (with patents filed for the assignee):

Robert F Seitz (2 out of 5 patents)

Jean Louis Vrignaud (1 out of 8 patents)

William E Fritz (1 out of 13 patents)

4. Jean-Louis Vrignaud (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 5758380 - Device for comprehensive oral hygiene (1998-06-02),

2. D386315 - Multiple head tooth brush (1997-11-18),

3. 5644990 - Railroad car hatch cover (1997-07-08),

4. 5438935 - Railroad car hatch cover mechanism with dual latch positions for safely (1995-08-08),

5. 4543889 - Hatch cover seal assembly (1985-10-01),

Dev-mark, Inc. is a leading software development company that specializes in providing custom solutions for businesses of all sizes. With a team of experienced developers and designers, we create innovative and user-friendly applications that help our clients streamline their operations and improve their bottom line. Our services range from web and mobile app development to e-commerce solutions and software integration. Contact us today to see how we can help your business thrive in the digital age.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

5 Patents

#35 in Naperville, IL

#2,420 in Illinois

#51,545 in US

Naperville, IL, United States of America

Dev-Mark, Inc.

Forward Citations = 121

4 inventors:

Robert F Seitz (2 out of 5 patents)

Jean Louis Vrignaud (1 out of 8 patents)

William E Fritz (1 out of 13 patents)

4. Jean-Louis Vrignaud (1 out of 1 patent)

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