Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978491 | Inflatable urinal for attachment to a toilet | — | 2005-12-27 |
| 6502518 | Converted multiple hopper rail car and method for making same | — | 2003-01-07 |
| 5181474 | Wood chip railway car constructed by converting a standard box car and method of conversion | — | 1993-01-26 |
| 5060579 | Sliding hopper outlet gate with plastic upper surface for smooth sliding and for sealing the outlet | James W. Johnson, Francis R. Schultz, Wayne A. Rhodes | 1991-10-29 |
| 4948185 | Hatch cover assembly | — | 1990-08-14 |
| 4941695 | Hatch cover assembly | — | 1990-07-17 |
| 4897671 | Integrated optic print head | Amaresh Mahapatra, Elias Snitzer | 1990-01-30 |
| 4696088 | Method of converting a hopper type of rail car to accept a wider output gate | — | 1987-09-29 |
| 4696237 | Multiple hopper rail car with offset vertical weld from conversion | — | 1987-09-29 |
| 4695207 | Pneumatic gate operator and outlet cap | — | 1987-09-22 |
| 4690070 | Hatch cover structure | — | 1987-09-01 |
| 4655365 | Hatch cover lock | — | 1987-04-07 |
| 4622902 | Hatch cover and locking structure | — | 1986-11-18 |
| 4589346 | Axle stop arrangement for single axle wheel truck for a skeleton type railway car | — | 1986-05-20 |
| 4570807 | Railway car underframe | Robert J. Kunst | 1986-02-18 |
| 4555033 | Slackless non-cushioned drawbar arrangement for railway car underframe | — | 1985-11-26 |
| 4359003 | Railway car center filler | Bhaskara R. Mutyala | 1982-11-16 |
| 4353314 | Box car corner post arrangement | Bhaskara R. Mutyala | 1982-10-12 |
| 4280596 | Air brake arrangement for center sill-less hopper cars | — | 1981-07-28 |
| 4262601 | Cam actuated railway hopper car lock mechanism | — | 1981-04-21 |
| 4259036 | Hopper car door locking arrangement | — | 1981-03-31 |
| 4232989 | Cam actuated railway hopper car door operating mechanism | — | 1980-11-11 |
| 4194450 | Railway hopper car door operating mechanism | — | 1980-03-25 |
| 4183179 | Sliding door and door guide arrangement for a railway passenger car compartment | Jack E. Gutridge, Walter J. Marulic | 1980-01-15 |
| 4181336 | Hopper car cam lock door operating mechanism | — | 1980-01-01 |