O'Farrell; Charles P.

Patent Applications and Registrations

Patent applications and USPTO patent grants for O'Farrell; Charles P..The latest application filed is for "drilling mud viscosification agents based on sulfonated ionomers".

Company Profile

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O'Farrell; Charles P. - Houston TX
O'Farrell; Charles P. - Clark NJ

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Drilling mud viscosification agents based on sulfonated ionomers Grant 4,447,338 - Lundberg , et al. May 8, 1	1984-05-08
Elastomeric blend compositions of a sulfonated elastomeric polymer Grant 4,134,870 - Makowski , et al. January 16, 1	1979-01-16
Process for sulfonating unsaturated elastomers using acyl sulfates Grant 4,119,616 - O'Farrell , et al. * October 10, 1	1978-10-10
Oil extended elastomeric compositions Grant 4,118,360 - Makowski , et al. October 3, 1	1978-10-03
Process for preparing a sulfonated and passivated low unsaturation elastomer cement Grant 4,077,933 - Burton , et al. March 7, 1	1978-03-07
Process for preparing latices of sulfonated elastomers Grant 4,007,149 - Burton , et al. February 8, 1	1977-02-08
Latex from conjugated diene butyl rubber Grant 3,983,062 - Baldwin , et al. September 28, 1	1976-09-28
Semi-crystalline sulfonated EDPM elastomeric ionomers Grant 3,887,530 - O'Farrell , et al. June 3, 1	1975-06-03
Adhesive cements containing a sulfonated derivative of butyl rubber and laminates therefrom Grant 3,867,247 - O'Farrell , et al. February 18, 1	1975-02-18

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