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Robert N. Cooper — 4 Patents

ADA.B. Dick: 2 patents #5 of 71Top 8%
CAControls Corporation Of America: 2 patents #4 of 23Top 20%
Skokie, IL: #164 of 674 inventorsTop 25%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Robert N. Cooper has been granted 4 US patents while listed as an inventor at A.B. Dick. The first was granted in 1980 and the most recent in December 1999. Robert N. Cooper ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Robert N. Cooper in Skokie, IL, US.

Patents per Year

Patents granted per year, 1980 to 1999Bar chart with a peak of 1 patents in 1980.peak 11980: 1 patents19801990: 1 patents19901997: 1 patents19971999: 1 patents1999

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6003545 Gas flow control device for high purity, highly corrosive gas service Sande Dukas, Kevin S. Bailey, John Friedrichs, David Durkin 1999-12-21
5687949 Gas flow regulator valve Sander G. Dukas, Kevin S. Bailey, Michael D. Heck 1997-11-18
4925761 Conversion solutions for lithographic printing plates containing phytic acid Michael Kulisz 1990-05-15
4213872 Sludge resistant liquid developer for electrostatic images containing a metal-dithiooxamide pigment or coating — 1980-07-22

Frequent Collaborators

Kevin S. Bailey2 shared
Michael D. Heck1 shared
John Friedrichs1 shared
Sander G. Dukas1 shared
David Durkin1 shared
Michael Kulisz1 shared

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