For the Inventor, By the Inventor

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St. Joseph, MI, United States of America

Shepherd Products, U.s., Inc.

USPTO Granted Patents = 25

Trademarks = 2

Forward Citations = 416

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17 inventors (with patents filed for the assignee):

Michael H Estkowski (10 out of 18 patents)

Christopher G Estkowski (8 out of 9 patents)

Jerome Carmel Caruso (4 out of 38 patents)

4. Robert M Shane (4 out of 4 patents)

5. Lennard V Lastuck (3 out of 3 patents)

6. Kenneth E Cooper (2 out of 2 patents)

7. Don E Minor (2 out of 3 patents)

8. Frederick C Greene (2 out of 3 patents)

9. G Norman Heaton (2 out of 3 patents)

10. John W Hogg (2 out of 2 patents)

11. Ludovic A Perl (2 out of 11 patents)

12. Michael Gaishin (1 out of 1 patent)

13. Loris Miotto (1 out of 2 patents)

14. Christopher F Estkowski (1 out of 1 patent)

15. John T Atwood (1 out of 1 patent)

25 patents: Sort by Forward Citations

1. 5415252 - Twin wheel caster and brake assembly (1995-05-16),

2. 5348371 - Mechanical device for use particularly for the synchronous movement of (1994-09-20),

3. 5276942 - Appliance roller (1994-01-11),

4. 5263238 - Method of forming a stem and assembling a snap ring in a groove in the (1993-11-23),

5. 5232265 - Vertical back adjust for chairs (1993-08-03),

6. 5230571 - Caster bearing assembly (1993-07-27),

7. 5226739 - Integral retainer and bearing assembly (1993-07-13),

8. 5068943 - Dual wheel tilted axle caster with an integral retainer and bearing (1991-12-03),

9. D321299 - Chair base (1991-11-05),

10. 5018787 - Chair seat tilt control (1991-05-28),

11. D312011 - Chair base (1990-11-13),

12. D308815 - Caster with arcurate hood cover (1990-06-26),

13. 4916801 - Method of forming a stem with a groove and a snap ring (1990-04-17),

14. 4892354 - Chair seat tilt control (1990-01-09),

15. D304399 - Chair base with casters (1989-11-07),

Shepherd Products, U.S., Inc. is a leading manufacturer of high-quality industrial machinery and equipment. Based in the United States, the company specializes in providing innovative solutions for a wide range of industries including manufacturing, construction, and agriculture. With a commitment to excellence and customer satisfaction, Shepherd Products, U.S., Inc. continues to set the standard for reliability and performance in the industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

25 Patents

#2 in St. Joseph, MI

#471 in Michigan

#12,934 in US

#24,953 in the World

St. Joseph, MI, United States of America

Shepherd Products, U.s., Inc.

Forward Citations = 416

17 inventors:

Michael H Estkowski (10 out of 18 patents)

Christopher G Estkowski (8 out of 9 patents)

Jerome Carmel Caruso (4 out of 38 patents)

4. Robert M Shane (4 out of 4 patents)

5. Lennard V Lastuck (3 out of 3 patents)

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