Robert James Longman

Person

Hertfordshire, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Optical disk recording performance
- Patent number 5,406,540
- Issue date Apr 11, 1995
- Plasmon Data Systems, Inc.
- Robert J. Longman
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk manufacture
- Patent number 5,137,617
- Issue date Aug 11, 1992
- Plasmon Data Systems, Inc.
- Peter R. Helfet
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage medium
- Patent number 5,008,687
- Issue date Apr 16, 1991
- Plasmon Limited
- Robert J. Longman
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical data storage medium
- Patent number 4,928,132
- Issue date May 22, 1990
- Plasmon Data Systems
- Robert M. Pettigrew
- G11 - INFORMATION STORAGE
Information Patent Grant
Pre-formatted moth-eye type optical data storage member and method
- Patent number 4,866,696
- Issue date Sep 12, 1989
- Plasmon Data Systems, Inc.
- Robert J. Longman
- G02 - OPTICS
Information Patent Grant
Interferometers
- Patent number 4,802,736
- Issue date Feb 7, 1989
- Plasmon Data Systems, N.V.
- Keith Gardner
- G02 - OPTICS
Information Patent Grant
Data storage medium
- Patent number 4,724,444
- Issue date Feb 9, 1988
- Plasmon Data Systems, Incorporated
- Robert M. Pettigrew
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical data recording using radiation of different characteristics
- Patent number 4,703,469
- Issue date Oct 27, 1987
- Plasmon Data Systems, P.V.
- Robert M. Pettigrew
- G11 - INFORMATION STORAGE
Information Patent Grant
Manufacture of diffraction gratings
- Patent number 4,657,780
- Issue date Apr 14, 1987
- Dr. Johannes Heidenhain GmbH
- Robert M. Pettigrew
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DISCS FOR ANALYZING BIOMOLECULES
- Publication number 20100285983
- Publication date Nov 11, 2010
- Lingvitae Holding AS
- Preben Lexow
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Rewritable optical storage device with extended life
- Publication number 20040017749
- Publication date Jan 29, 2004
- Plasmon LMS, Inc.
- Jeffrey M. Brooke
- G11 - INFORMATION STORAGE

Robert James Longman

Person

Patents Grantslast 30 patents

Optical disk recording performance

Optical disk manufacture

Data storage medium

Optical data storage medium

Pre-formatted moth-eye type optical data storage member and method

Interferometers

Data storage medium

Optical data recording using radiation of different characteristics

Manufacture of diffraction gratings

Patents Applicationslast 30 patents

OPTICAL DISCS FOR ANALYZING BIOMOLECULES

Rewritable optical storage device with extended life