| 4964726 |
Apparatus and method for optical dimension measurement using interference of scattered electromagnetic energy |
Hans P. Kleinknecht |
1990-10-23 |
| 4668080 |
Method and apparatus for forming large area high resolution patterns |
Michael T. Gale, Hans P. Kleinknecht |
1987-05-26 |
| 4661983 |
Secure document identification technique |
— |
1987-04-28 |
| 4630105 |
Symmetric color encoding shift pattern for a solid-state imager camera and decoding scheme therefor |
— |
1986-12-16 |
| 4591900 |
Encoding pattern for single chip CCD camera processing scheme |
Egon J. Heeb, Rudolf H. Morf |
1986-05-27 |
| 4576439 |
Reflective diffractive authenticating device |
Michael T. Gale, Martin Ebnother |
1986-03-18 |
| 4546380 |
Solid-state color-encoding television camera |
— |
1985-10-08 |
| 4506949 |
Diffractive color separation filter |
— |
1985-03-26 |
| 4484797 |
Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light |
Rudolf H. Morf |
1984-11-27 |
| 4464030 |
Dynamic accuracy X-Y positioning table for use in a high precision light-spot writing system |
Michael T. Gale |
1984-08-07 |
| 4426130 |
Semi-thick transmissive and reflective sinusoidal phase grating structures |
— |
1984-01-17 |
| 4417784 |
Multiple image encoding using surface relief structures as authenticating device for sheet-material authenticated item |
Michael T. Gale |
1983-11-29 |
| 4318123 |
Solid-state, color-encoding television camera |
— |
1982-03-02 |
| 4314763 |
Defect detection system |
Edgar F. Steigmeier |
1982-02-09 |
| 4272197 |
Apparatus and method for measuring the ratio of two signals |
— |
1981-06-09 |
| 4255019 |
Diffractive color filter |
— |
1981-03-10 |
| 4251137 |
Tunable diffractive subtractive filter |
James Kane |
1981-02-17 |
