For the Inventor, By the Inventor

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Portsmouth, VA, United States of America

H.e.r.c. Products Incorporated

USPTO Granted Patents = 14

% Expired Patents = 7.1

Trademarks = 1

Forward Citations = 191

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15 inventors (with patents filed for the assignee):

Jerome H Ludwig (11 out of 25 patents)

Myron B Shenkiryk (5 out of 5 patents)

Allen C Hieatt (3 out of 5 patents)

4. Edward C Perry (2 out of 2 patents)

5. Craig Edstrand (2 out of 2 patents)

6. Dan Temple (2 out of 2 patents)

7. Edward Fyfe (2 out of 2 patents)

8. James R Johnson (1 out of 4 patents)

9. S Steven Carl (1 out of 1 patent)

10. Franklin D Dean, Jr (1 out of 1 patent)

11. Donald F Tallman (1 out of 1 patent)

12. Jerry J Colahan (1 out of 4 patents)

13. Todd R Eden (1 out of 4 patents)

14. Duane W Sampson (1 out of 1 patent)

15. Patrick Eugene Lien (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 6964275 - Countermeasure washdown system cleaning (2005-11-15),

2. 6345632 - Method of cleaning and passivating a fire protection system (2002-02-12),

3. 6076536 - Cleaning and passivating water distribution systems (2000-06-20),

4. 5895763 - Controlled carbonate removal from water conduit systems (1999-04-20),

5. 5885364 - Method of cleaning and maintaining potable water distribution pipe (1999-03-23),

6. 5873944 - Vacuum waste pipe cleaning (1999-02-23),

7. 5800629 - Pipe system cleaning and in-line treatment of spent cleaning solution (1998-09-01),

8. 5680877 - System for and method of cleaning water distribution pipes (1997-10-28),

9. 5609692 - Method of removing chloride ion or a compound thereof from a surface (1997-03-11),

10. 5527395 - Method of cleaning and maintaining potable water distribution pipe (1996-06-18),

11. 5494527 - Method of cleaning and maintaining hot water heaters (1996-02-27),

12. 5492629 - Method of cleaning scale and stains in water systems and related (1996-02-20),

13. 5451335 - 1:1 soap compositions of acids and amines or ammonia useful in removal (1995-09-19),

14. 5360488 - Method of cleaning and maintaining water distribution pipe systems (1994-11-01),

Company Overview

H.e.r.c. Products Incorporated, based in Portsmouth, VA, specializes in the development and manufacturing of advanced industrial products. The company focuses on innovative solutions that enhance operational efficiency across various sectors, including aerospace, automotive, and marine industries. With a commitment to quality and technological advancement, H.e.r.c. Products is dedicated to meeting the evolving needs of its clients through research and development in cutting-edge materials and engineering practices.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

14 Patents

#2 in Portsmouth, VA

#375 in Virginia

#22,302 in US

#42,199 in the World

Portsmouth, VA, United States of America

H.e.r.c. Products Incorporated

Forward Citations = 191

15 inventors:

Jerome H Ludwig (11 out of 25 patents)

Myron B Shenkiryk (5 out of 5 patents)

Allen C Hieatt (3 out of 5 patents)

4. Edward C Perry (2 out of 2 patents)

5. Craig Edstrand (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: H.e.r.c. Products Incorporated. Retrieved from https://idiyas.com/company/h-e-r-c-products

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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