DR

David N. Ridge

AC American Cyanamid: 12 patents #103 of 1,554Top 7%
📍 Fryeburg, ME: #59 of 504 inventorsTop 15%
🗺 Maine: #271 of 4,281 inventorsTop 7%
Overall (All Time): #367,002 of 4,157,543Top 9%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
11879566 Pinch valve assembly and method for using same CHRIS RAS, Saran Kumar Boyilla 2024-01-23
4900477 Novel intermediates and an improved process for producing the compound (3.beta.,5.alpha.)-3-hydroxycholest-8(14)-en-15-one William D. Dean, Robert F. Church 1990-02-13
4329463 Substituted 1H-1,2,4-triazoles Stanley Lang, Yang-I Lin 1982-05-11
4284785 Substituted phenyl esters of isoxazolecarboxylic acids John W. Hanifin, Jr. 1981-08-18
4259256 2-Benzoyl-3-dimethylamino-2-alkenonitriles John W. Hanifin, Jr. 1981-03-31
4259504 Substituted 1H-1,2,4-triazoles Stanley Lang, Yang-I Lin 1981-03-31
4254049 Substituted phenyl-2-cyano-2-alkenoic acid esters John W. Hanifin, Jr. 1981-03-03
4254047 Substituted phenyl-2-cyano-2-thioalkenoic acid esters John W. Hanifin, Jr. 1981-03-03
4254048 Substituted phenyl alkylidene acetoacetonitriles John W. Hanifin, Jr. 1981-03-03
4241077 .beta.-Oxo-3-thiophenepropionitrile and .beta.-amino-2-(3)-thiopheneacrylonitriles John W. Hanifin, Jr. 1980-12-23
4197310 Thiophenepropionitriles John W. Hanifin, Jr. 1980-04-08
4189436 .beta.-oxo-3-thiophene propionitrile and .beta.-amino-2-(3)-thiophene acrylonitriles John W. Hanifin, Jr. 1980-02-19
4181677 2-Benzoyl-3-alkoxy-2-alkenonitriles John W. Hanifin, Jr. 1980-01-01