Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10056734 | Laser device | Nigel Copner, Alan James Holloway, Anas F Jarjour, Jungang Huang | 2018-08-21 |
| 8368887 | Rotation detection kit | Stephen Mark Angood, Christopher Kemp, Mark Chapman, David R. McMurtry | 2013-02-05 |
| 6934641 | Motion detection and analysis | Mark Chapman, Sergey Loukianov, Seamus McFadden | 2005-08-23 |
| 6597505 | Apparatus for producing and guiding a light beam | Mark Chapman, Tingdi Liao, Jan Linnenbuerger, Damon Mark Northeast | 2003-07-22 |
| 6345060 | Frequency stabilized semiconductor laser | Nigel Copner | 2002-02-05 |
| 5975744 | Real-time compensation system and method | Seamus McFadden | 1999-11-02 |
| 5818047 | Detector for explosive substances | David N. Batchelder, Richard J. Lacey | 1998-10-06 |
| 5689333 | Spectroscopic apparatus and methods | David N. Batchelder, Chunwei Cheng, Brian J. Smith | 1997-11-18 |
| 5638177 | Laser interferometer for measuring object displacement over large distances | Mark Chapman | 1997-06-10 |
| 5541730 | Interferometric measuring apparatus for making absolute measurements of distance or refractive index | — | 1996-07-30 |
| 5341702 | Apparatus for calibration of an angular displacement | Jeffrey Graham | 1994-08-30 |
| 5337145 | Two component straightness interferometer apparatus for measuring movements of parts of a machine | — | 1994-08-09 |
| 5313271 | Absolute gas refractometer wherein the optical path difference of said refractometer is fixed | — | 1994-05-17 |
| 5274436 | Laser interferometer for measuring distance using a frequency difference between two laser beams | — | 1993-12-28 |
| 5237390 | Method and apparatus for measurement of angular displacement | — | 1993-08-17 |
| 5056921 | Optical apparatus for use with inteferometric measuring devices | — | 1991-10-15 |
| 5026163 | Straightness interferometer system | David R. McMurtry | 1991-06-25 |
| 5004982 | Scales for position determining apparatus having marks of different amplitudes thereon | David R. McMurtry, David Wilson | 1991-04-02 |
| 4996416 | Optical detection system with means for equalizing ambient light levels at multiple detectors | — | 1991-02-26 |
| 4950079 | Combined scale and interferometer | David R. McMurtry | 1990-08-21 |
| 4892407 | Optical measuring apparatus for use on machines | David R. McMurtry | 1990-01-09 |