RC

Roger M. Christenson

PI Ppg Industries: 33 patents #8 of 1,216Top 1%
AO Ashland Oil: 1 patents #154 of 284Top 55%
📍 Gibsonia, PA: #19 of 383 inventorsTop 5%
🗺 Pennsylvania: #1,480 of 74,527 inventorsTop 2%
Overall (All Time): #104,218 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 1–25 of 34 patents

Patent #TitleCo-InventorsDate
4711917 Cationic coating compositions for electrodeposition over rough steel Gregory J. McCollum, Roger L. Scriven, George W. Mauer, Robert R. Zwack 1987-12-08
4693846 Urethane-modified rosin esters Robert M. Piccirilli, Frederick A. Falk, Joseph M. Makhlouf 1987-09-15
4683266 Compositions thickened through urethane reaction Anthony C. Palermo, Glenn L. Mazza 1987-07-28
4638020 Aqueous composition comprising a phosphated epoxy and non-self dispersible resin Mary Ellen Rosenberger, Marvin T. Tetenbaum 1987-01-20
4615779 Cationic coating compositions for electrodeposition over rough steel Gregory J. McCollum, Roger L. Scriven, George W. Mauer, Robert R. Zwack 1986-10-07
4605478 Cationic electrodepositable compositions containing formaldehyde scavenger Joseph T. Valko, Joseph E. Plasynski, Roger L. Scriven 1986-08-12
4591518 Acrylic functional urethane alkyd resin coating compositions William J. Schillinger, J. Alden Erikson, Rostyslaw Dowbenko 1986-05-27
4581111 Treatment of ultrafiltrate by electrodialysis Donald D. Emmonds, Matthew S. Scott 1986-04-08
4560717 Cationic electrodepositable compositions containing formaldehyde scavenger Joseph T. Valko, Joseph E. Plasynski, Roger L. Scriven 1985-12-24
4530945 Pigment grinding vehicle Roger L. Scriven, Robert D. Jerabek, Jeffrey G. Koren, Mark W. Johnson 1985-07-23
4477618 Aminoplast curable coating compositions containing sulfonic acid esters as latent acid catalysts Debra L. Singer, Gregory J. McCollum, Rostyslaw Dowbenko, Michael M. Chau, Wen-Hsuan Chang 1984-10-16
4454274 Aminoplast curable coating compositions containing cycloaliphatic sulfonic acid esters as latent acid catalysts Debra L. Singer, Gregory J. McCollum, Rostyslaw Dowbenko 1984-06-12
4403085 Polyurethane crosslinkers, and the process for preparing and using the same Thomas R. Hockswender 1983-09-06
4380601 Thermosetting catonic acrylic latices and their use in coating compositions David Alan Welsh, Rostyslaw Dowbenko, Suryya K. Das, Charles M. Kania 1983-04-19
RE31022 Michael adducts of polymeric materials useful in coating applications Stephen L. Buchwalter, Joseph F. Bosso 1982-08-31
4339365 Coating compositions containing pigment dispersants David Z. Becher, Richard L. Coalson, Percy E. Pierce, Karl F. Schimmel 1982-07-13
4337184 Urethane rheology modifiers substantially free of terminal hydrophobic groups and compositions containing same Karl F. Schimmel, Jerome A. Seiner, Rostyslaw Dowbenko 1982-06-29
4335829 Coated metal surfaces and method of coating metal surfaces with aqueous resinous dispersions of epoxy resins and acrylic polymers Rudolf Maska, Rostyslaw Dowbenko, Thomas R. Hockswender 1982-06-22
4327008 Urethane rheology modifiers and coating compositions containing same Karl F. Schimmel, Jerome A. Seiner, Rostyslaw Dowbenko 1982-04-27
4316784 Process for electrodeposition of Michael adducts of polymeric materials Stephen L. Buchwalter, Joseph F. Bosso 1982-02-23
4303764 Pigment dispersants for coating compositions David Z. Becher, Richard L. Coalson, Percy E. Pierce, Karl F. Schimmel 1981-12-01
4302562 Pigment dispersants for coating compositions David Z. Becher, Richard L. Coalson, Percy E. Pierce, Karl F. Schimmel 1981-11-24
4302561 Pigment dispersants for coating compositions David Z. Becher, Richard L. Coalson, Percy E. Pierce, Karl F. Schimmel 1981-11-24
4302560 Pigment dispersants for coating compositions David Z. Becher, Richard L. Coalson, Percy E. Pierce, Karl F. Schimmel 1981-11-24
4298511 Urethane rheology modifiers and compositions containing same Karl F. Schimmel, Jerome A. Seiner, Rostyslaw Dowbenko 1981-11-03