Opheij; Willem G.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Opheij; Willem G..The latest application filed is for "objective lens and scanning device using such an objective lens".

Company Profile

0.20.0

Opheij; Willem G. - Eindhoven NL

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Objective lens and scanning device using such an objective lens Grant 6,052,237 - Opheij , et al. April 18, 2	2000-04-18
Optical scanning device using a plurality of scanning spots Grant 5,854,780 - Opheij , et al. December 29, 1	1998-12-29
Optical scanner having symmetry about an oblique divider Grant 5,579,298 - Opheij , et al. November 26, 1	1996-11-26
Planar optical scanning head having deficiency-correcting grating Grant 5,204,516 - Opheij April 20, 1	1993-04-20
Planar optical scanning head with concentric diffraction gratings Grant 5,146,080 - Opheij September 8, 1	1992-09-08
Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device Grant 4,924,082 - Opheij , et al. May 8, 1	1990-05-08
Apparatus for optically scanning an information plane Grant 4,924,079 - Opheij , et al. May 8, 1	1990-05-08
Optical record carrier scanning apparatus providing optoelectronic positioning of the scanning spot Grant 4,918,679 - Opheij , et al. April 17, 1	1990-04-17
Memory card comprising an optical memory disc and microelectronic memory component, and apparatus for transferring information to and from such card Grant 4,868,373 - Opheij , et al. September 19, 1	1989-09-19
Optical scanning unit with tracking error detection Grant 4,864,118 - Opheij , et al. September 5, 1	1989-09-05
Optical record carrier with surface layer extending to the center of a substantially circular information track structure therein Grant 4,862,447 - Opheij August 29, 1	1989-08-29
Scanning device for an optical recording and/or reproducing apparatus Grant 4,835,380 - Opheij , et al. May 30, 1	1989-05-30
Optical scanning apparatus Grant 4,826,270 - Opheij , et al. May 2, 1	1989-05-02
Electronically adjustable position-sensitive radiation detector and optical systems using same Grant 4,810,871 - Opheij March 7, 1	1989-03-07
Device for determining a centring error of an optical disc relative to the axis of rotation of a turntable supporting the disc Grant 4,761,776 - Opheij August 2, 1	1988-08-02
Apparatus for recording and reading information tracks on an optical record carrier with a beam of radiation Grant 4,546,463 - Opheij , et al. October 8, 1	1985-10-08
Method of recording a digital information signal on a record carrier having a radiation-sensitive information layer, apparatus for carrying out the method, and optical record carrier provided with such a digital information signal Grant 4,473,829 - Schouhamer Immink , et al. September 25, 1	1984-09-25
Apparatus for reading and/or writing an optically readable information structure Grant 4,423,496 - Opheij , et al. December 27, 1	1983-12-27
Optical focussing device with inclination detection Grant 4,374,324 - Van Rosmalen , et al. February 15, 1	1983-02-15
Apparatus for reading an optical radiation-reflecting record carrier including a narrow focus control beam Grant 4,135,207 - Greve , et al. January 16, 1	1979-01-16

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.