Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10143343 | Standing assistive device | — | 2018-12-04 |
| D741682 | Pull me up | — | 2015-10-27 |
| D610783 | Feathered fitted cap | — | 2010-03-02 |
| 6939469 | Band gap mass filter with induced azimuthal electric field | Tihiro Ohkawa | 2005-09-06 |
| 6787044 | High frequency wave heated plasma mass filter | Richard L. Freeman, John Rogers Gilleland, Tihiro Ohkawa | 2004-09-07 |
| 6726844 | Isotope separator | Tihiro Ohkawa | 2004-04-27 |
| 6398920 | Partially ionized plasma mass filter | Tihiro Ohkawa, Sergei Putvinski, Richard L. Freeman | 2002-06-04 |
| 6386374 | Multi-mass filter with electric field variations | Tihiro Ohkawa, Richard L. Freeman | 2002-05-14 |
| 6356025 | Shielded rf antenna | Richard L. Freeman | 2002-03-12 |
| 6304036 | System and method for initiating plasma production | Richard L. Freeman | 2001-10-16 |
| 6293406 | Multi-mass filter | Tihiro Ohkawa, Richard L. Freeman | 2001-09-25 |
| 5361016 | High density plasma formation using whistler mode excitation in a reduced cross-sectional area formation tube | Tihiro Ohkawa, Stanley I. Tsunoda | 1994-11-01 |
| 5308751 | Method for sequencing double-stranded DNA | Tihiro Ohkawa | 1994-05-03 |
| 5123142 | Vacuum operated cleaner attachment | — | 1992-06-23 |
| 5026114 | Swivel wheelchair tray | — | 1991-06-25 |
| 4901067 | Interface circuit for use in a programmable message display | Leon C. Brower | 1990-02-13 |
| 4771673 | Gun port assembly with pivotably closure | — | 1988-09-20 |
| 4771672 | Easily openable gun port assembly | — | 1988-09-20 |
| 4631361 | Programmable ring generator | — | 1986-12-23 |
| 4530086 | Processor controlled adjustment of line circuit transmission parameters | Leonard Edward Bogan, Jr., William R. Godwin, Richard A. Hamersley, Harold W. Poulsen | 1985-07-16 |
| 4519071 | Phase-locked loop and clock circuit for a line switch | — | 1985-05-21 |
| 4513414 | Clocking arrangement for telephone switching system | Paul H. Knapke | 1985-04-23 |
| 4495614 | Circuit for interfacing a processor to a line circuit | Enn Aro, Leonard Edward Bogan, Jr., Richard A. Hamersley, Paul H. Knapke | 1985-01-22 |
| 4490819 | Rate converter | Leonard Edward Bogan, Jr., Paul H. Knapke | 1984-12-25 |
| 4410823 | Surface acoustic wave device employing reflectors | Adrian J. DeVries | 1983-10-18 |