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NAT ROLLING MILLS INC

Overview
  • Total Patents
    23
About

NAT ROLLING MILLS INC has a total of 23 patent applications. Its first patent ever was published in 1985. It filed its patents most often in United States, Canada and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering, machines and consumer goods are ROLLFORM INC, DYMET DIMENSIONS and CORNELIUS COLLINS.

Patent filings in countries

World map showing NAT ROLLING MILLS INCs patent filings in countries
# Country Total Patents
#1 United States 16
#2 Canada 6
#3 WIPO (World Intellectual Property Organization) 1

Patent filings per year

Chart showing NAT ROLLING MILLS INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Machines
#3 Consumer goods

Top inventors

# Name Total Patents
#1 Platt William J 22
#2 Rose Thomas E 6
#3 Gillenwater Paul C 2
#4 Ziegler Daniel C 1
#5 Platt William 1
#6 Brady Eugene E 1

Latest patents

Publication Filing date Title
US5390456A Decorative suspended ceiling
US5241798A Decorative suspended ceiling
US5046294A Perimeter clip
CA2015106A1 Interlocking cross tee
US4955134A Method of forming a spring-like fire strip
US4926607A Compression leg
US4916877A Fire strip construction
US4864791A Fire strip
US4890428A Partition clip
CA1311104C Tier drop grid system
US4827681A Interlocking cross tee
US4794745A Tier drop grid system
US4785603A Interlocking cross tee
US4713919A Laser welded ceiling grid members
US4727703A Suspended ceiling grid structure
US4606166A Fire-rated beam with expansion relief section