Patent Assignment Details
NOTE:Results display only for issued patents and published applications.
For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 019635/0557 | |
| Pages: | 3 |
| | Recorded: | 07/27/2007 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
5
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Patent #:
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Issue Dt:
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04/10/2001
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Application #:
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09041768
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Filing Dt:
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03/13/1998
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Title:
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OPTICAL HEAD HAVING TWO LASERS OF DIFFERENT WAVELENGTH AND AN OBJECTIVE LENS MADE OF ONE MATERIAL HAVING A RECTANGULAR GROOVE SHIFTING PHASE TO DECREASE FOCUSED LASER BEAM SPOT ABERRATION FOR FOCUSING LASER BEAMS ON DIFFERENT THICKNESS SUBSTRATES
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Patent #:
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Issue Dt:
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04/06/2004
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Application #:
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09614191
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Filing Dt:
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07/11/2000
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Title:
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OPTICAL DISK APPARATUS
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Patent #:
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Issue Dt:
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12/25/2001
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Application #:
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09768310
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Filing Dt:
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01/25/2001
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Publication #:
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Pub Dt:
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06/28/2001
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Title:
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Optical head having two semiconductor lasers of different wavelength, an objective lens focusing laser beams on different thickness substrates, and an annular phase shifter decreasing focused laser beam spot aberration
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Patent #:
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Issue Dt:
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08/06/2002
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Application #:
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09946757
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Filing Dt:
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09/06/2001
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Publication #:
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Pub Dt:
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04/25/2002
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Title:
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OPTICAL HEAD HAVING TWO SEMICONDUCTOR LASERS OF DIFFERENT WAVELENGTH, AN OBJECTIVE LENS FOCUSING LASER BEAMS ON DIFFERENT THICKNESS SUSTRATES, AND AN ANNULAR PHASE SHIFTER DECREASING FOCUSED LASER BEAM SPOT ABERRATION
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Patent #:
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Issue Dt:
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12/10/2002
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Application #:
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10086723
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Filing Dt:
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03/04/2002
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Publication #:
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Pub Dt:
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08/22/2002
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Title:
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OPTICAL HEAD HAVING TWO SEMICONDUCTOR LASERS OF DIFFERENT WAVELENGTH, AN OBJECTIVE LENS FOCUSING LASER BEAMS ON DIFFERENT THICKNESS SUBSTRATES, AND AN ANNULAR PHASE SHIFTER DECREASING FOCUSED LASER BEAM SPOT ABERRATION
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Assignee
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| 1-1-88, USHITORA |
| IBARAKI-SHI, OSAKA, JAPAN 567-8567 |
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Correspondence name and address
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JAMES A. OLIFF
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OLIFF & BERRIDGE, PLC
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P.O. BOX 19928
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ALEXANDRIA, VA 22320
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