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DONN PROD INC

Overview
  • Total Patents
    60
About

DONN PROD INC has a total of 60 patent applications. Its first patent ever was published in 1956. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering, machines and electrical machinery and energy are OLSEN ANDERS C, PREFORM HOLDING D O O and ROLLFORM INC.

Patent filings in countries

World map showing DONN PROD INCs patent filings in countries
# Country Total Patents
#1 United States 32
#2 Canada 13
#3 United Kingdom 7
#4 Brazil 3
#5 Germany 2
#6 France 2
#7 South Africa 1

Patent filings per year

Chart showing DONN PROD INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Brown Donald A 24
#2 Downing Jr Lucien R 16
#3 Downing Lucien R Jr 10
#4 Mieyal David F 5
#5 Lalonde Paul D 3
#6 Downing Lucien R 3
#7 Lahm Albert H 2
#8 Koski Gerald L 2
#9 Downing L 2
#10 Aubrey Brown Donald 2

Latest patents

Publication Filing date Title
GB8409341D0 Flexible trim for lid
US4113219A Adjustable pedestal for elevated floors
US4161856A Suspension ceiling system
CA1058370A Locking connection for suspension ceiling systems
US4086480A Suspension ceiling and recessed lighting system
US4108563A Locking connection for suspension ceiling systems
US4067156A Computer floor structure
US3922764A Panel clip
US3835614A Suspension system
US3693303A Removable grid member
US3548557A Partition wall
US3501185A Cross beam connector
US3388519A Controlled expansion structural beam and grid
US3320705A Door frame fastener
GB1077203A Roof deck and method of constructing same
US3276171A Self-supporting paneled structure and method of constructing same
US3271920A Wall supporting structural beam
GB1084776A Resilient structural beam
GB1068380A Structural beam
US3320713A Beam connector