Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292426 | Wax conversion process | John Holland, Gerald F. Prescott, Dann G. Roy, James R. Whiteman | 1994-03-08 |
| 5242579 | Control method for solvent refining lubricating oils | Theodore C. Mead | 1993-09-07 |
| 5041206 | Solvent extraction of lubricating oils | — | 1991-08-20 |
| 5039399 | Solvent extraction of lubricating oils | — | 1991-08-13 |
| 5006222 | Solvent dewaxing of lubricating oils | — | 1991-04-09 |
| 4375403 | Solvent dewaxing process | Charles W. Harrison, Herbert J. Pitman, John D. Begnaud | 1983-03-01 |
| 4328092 | Solvent extraction of hydrocarbon oils | — | 1982-05-04 |
| 4304660 | Manufacture of refrigeration oils | Ralph P. Chesluk, Howard J. Platte | 1981-12-08 |
| 4294689 | Solvent refining process | Benjamin F. Smith, Jr., Theodore C. Mead | 1981-10-13 |
| 4231459 | Control system for an N-methyl-2-pyrrolidone refining unit receiving light sweet charge oil | Frank L. Barger | 1980-11-04 |
| 4230215 | Control system for an MP refining unit receiving medium sweet charge oil | Frank L. Barger | 1980-10-28 |
| 4224673 | Control system for an MP refining unit receiving heavy sour charge oil | Frank L. Barger | 1980-09-23 |
| 4224674 | Control system for an N-methyl-2-pyrrolidone refining unit receiving heavy sweet charge oil | Frank L. Barger | 1980-09-23 |
| 4212070 | Control system for a furfural refining unit receiving heavy sweet charge oil | John D. Begnaud, Frank L. Barger | 1980-07-08 |