Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9547103 | Gradiometer and method of changing an optical path length to directly obtain a value of a gradient of gravity | Fred J. Klopping, Ryan M. Billson | 2017-01-17 |
| 9500766 | Interferometric gravimeter apparatus and method | Fred J. Klopping, Ryan M. Billson | 2016-11-22 |
| 9291742 | Double pendulum gravimeter and method of measuring gravity using the same | — | 2016-03-22 |
| 9256079 | Polarized beam director and method | Fred J. Klopping, Ryan M. Billson | 2016-02-09 |
| 9110185 | Polarized beam, matched coincident beam path, interferometric gradiometer apparatus and method | Fred J. Klopping, Ryan M. Billson | 2015-08-18 |
| 8978465 | Interferometric gradiometer apparatus and method | Fred J. Klopping, Ryan M. Billson | 2015-03-17 |
| 8931341 | Test mass and method for interferometric gravity characteristic measurement | Fred J. Klopping, Ryan M. Billson | 2015-01-13 |
| 8028577 | Gravity survey with relative and absolute gravimeters | — | 2011-10-04 |
| 7451645 | Test mass for gravimeters and gradiometers | Ryan M. Billson, Fred J. Klopping, Jess Valentine, Derek C. S. van Westrum | 2008-11-18 |
| 7406390 | Accurate dynamic gravity measurement method and apparatus | Christopher Nind | 2008-07-29 |
| 6298722 | Rotary cam driven free fall dropping chamber mechanism | James Faller, Artyom Vitoucrine | 2001-10-09 |
| 5954502 | Adjustable orthodontic bracket assembly with continuous adjustment in any one of six planes of motion | Rodney C. Tuenge, Jess Valentine | 1999-09-21 |
| 5892151 | Differential interferometric ballistic gravity measurement apparatus and method | Alan T. Herring | 1999-04-06 |
| 5351122 | Absolute gravity inline measuring apparatus incorporating improved operating features | William Hollander, James Faller | 1994-09-27 |