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

Trademarks = 1

Forward Citations = 190

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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),

H.e.r.c. Products Incorporated is a leading manufacturer of high-quality industrial products. With a strong focus on innovation and customer satisfaction, we strive to provide our clients with the best solutions for their specific needs. Our extensive product line includes a wide range of tools, equipment, and accessories for various industries. Visit our website to learn more about our products and services.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

14 Patents

#2 in Portsmouth, VA

#383 in Virginia

#21,638 in US

#40,935 in the World

Portsmouth, VA, United States of America

H.e.r.c. Products Incorporated

Forward Citations = 190

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)

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