Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460758 | Drag reduction agents for aqueous salt solutions | Dennis G. Peiffer, Robert D. Lundberg, Ralph M. Kowalik | 1984-07-17 |
| 4425463 | Drilling fluids based on a mixture of sulfonated thermoplastic polymer and an amine-treated clay | Thad O. Walker, Robert D. Lundberg, Warren A. Thaler, Dennis G. Pfeiffer | 1984-01-10 |
| 4425462 | Drilling fluids based on sulfonated elastomeric polymers | Robert D. Lundberg, Thad O. Walker | 1984-01-10 |
| 4425461 | Drilling fluids based on a mixture of a sulfonated thermoplastic polymer and a sulfonated elastomeric polymer | Robert D. Lundberg, Warren A. Thaler, Thad O. Walker, Dennis G. Peiffer | 1984-01-10 |
| 4425455 | Drilling fluids based on powdered sulfonated thermoplastic polymers | Robert D. Lundberg, Thad O. Walker, Dennis G. Peiffer | 1984-01-10 |
| 4387172 | Emulsion type adhesive compositions | Pawan K. Agarwal, Robert D. Lundberg, Morris L. Evans | 1983-06-07 |
| 4273846 | Imaging member having a charge transport layer of a terphenyl diamine and a polycarbonate resin | Damodar M. Pai, John F. Yanus, Dale S. Renfer, Milan Stolka | 1981-06-16 |
| 4233384 | Imaging system using novel charge transport layer | John F. Yanus, Damodar M. Pai | 1980-11-11 |