Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7901343 | Methods and apparatus for centrifuging dry solids | James N. Gehrking, Adelbert Gorham, Ronald L. Jorgenson, Rodger I. Spears, Lloyd E. Weisert | 2011-03-08 |
| 7077799 | Apparatus and method for a high-efficiency self-cleaning centrifuge having concentrate cylinders | Adelbert Gorham, James N. Gehrking, Ronald L. Jorgenson, David S. Paulson, Rodger I. Spears +1 more | 2006-07-18 |
| 6872431 | Filter material construction and method | Brad E. Kahlbaugh | 2005-03-29 |
| 6521321 | Filter material construction and method | Brad E. Kahlbaugh | 2003-02-18 |
| 6171684 | Filter material construction and method | Brad E. Kahlbaugh | 2001-01-09 |
| 6165572 | Filter material construction and method | Brad E. Kahlbaugh | 2000-12-26 |
| 6019809 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 2000-02-01 |
| 5972063 | Air filtration arrangement and method | Brad E. Kahlbaugh, Erland D. Anderson | 1999-10-26 |
| 5800587 | Filtration arrangement and method | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1998-09-01 |
| 5797973 | Air filtration arrangement and method | Brad E. Kahlbaugh, Erland D. Anderson | 1998-08-25 |
| 5792227 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1998-08-11 |
| 5762669 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1998-06-09 |
| 5762670 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1998-06-09 |
| 5672399 | Filter material construction and method | Brad E. Kahlbaugh | 1997-09-30 |
| 5669949 | Air filtration arrangement | Brad E. Kahlbaugh, Erland D. Anderson | 1997-09-23 |
| 5622537 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1997-04-22 |
| 5423892 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1995-06-13 |
| 5364456 | Filtration arrangement and method | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1994-11-15 |
| 5238474 | Filtration arrangement | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1993-08-24 |
| 5082476 | Filtration arrangement and method | Brad E. Kahlbaugh, Susan B. Reinhart, John T. Herman | 1992-01-21 |
| RE32381 | Cartridge centrifuge | — | 1987-03-24 |
| 4406651 | Multi-phase self purging centrifuge | John T. Herman, Bernard A. Matthys | 1983-09-27 |
| 4366069 | Coolant recovery system | John T. Herman, Girma Wolde-Michael, Delmer L. Radeztsky | 1982-12-28 |
| 4350282 | Self-purging centrifuge | John T. Herman | 1982-09-21 |