Enter assignee name

CIPO Patents = 4

Forward Citations = 238

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6 inventors (with patents filed for the assignee):

William J Platt (16 out of 39 patents)

Thomas E Rose (4 out of 4 patents)

Daniel C Ziegler (1 out of 7 patents)

4. Eugene E Brady (1 out of 1 patent)

5. Paul C Gillenwater (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 5390456 - Decorative suspended ceiling (1995-02-21),

2. 5279033 - Method of making a beam for a decorative suspended ceiling (1994-01-18),

3. 5241798 - Decorative suspended ceiling (1993-09-07),

4. 5046294 - Perimeter clip (1991-09-10),

5. 4955134 - Method of forming a spring-like fire strip (1990-09-11),

6. 4926607 - Compression leg (1990-05-22),

7. 4916877 - Fire strip construction (1990-04-17),

8. 4912894 - Interlocking cross tee (1990-04-03),

9. 4890428 - Partition clip (1990-01-02),

10. 4864791 - Fire strip (1989-09-12),

11. 4827681 - Interlocking cross tee (1989-05-09),

12. 4794745 - Tier drop grid system (1989-01-03),

13. 4785603 - Interlocking cross tee (1988-11-22),

14. 4727703 - Suspended ceiling grid structure (1988-03-01),

15. 4713919 - Laser welded ceiling grid members (1987-12-22),

National Rolling Mills, Inc. is a leading manufacturer of high quality steel products. With over 50 years of experience in the industry, we specialize in producing and supplying various types of steel products including flat bars, angles, channels, and more. Our commitment to quality and customer satisfaction sets us apart from the competition.

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USPTO Data Jan 1 1976 - Dec 2 2025

16 Patents

#1 in Frazer, PA

#711 in Pennsylvania

#19,264 in US

#36,617 in the World

Frazer, PA, United States of America

National Rolling Mills, Inc.