U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Recording medium and process for forming medium

Patent 6103454 Issued on August 15, 2000. Estimated Expiration Date: Icon_subject March 24, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3389114

3428599

3474070

3479316

Polymeric based composition
Patent #: 3957497
Issued on: 05/18/1976
Inventor: Gray ,   et al.

Organopolysiloxane resins of increased hardness
Patent #: 4223121
Issued on: 09/16/1980
Inventor: Burzynski

Preparation of organopolysiloxane resins with weak organic bases
Patent #: 4242252
Issued on: 12/30/1980
Inventor: Newing

Solventless liquid organopolysiloxanes
Patent #: 4539232
Issued on: 09/03/1985
Inventor: Burzynski ,   et al.

Tintable scratch resistant coating
Patent #: 4551361
Issued on: 11/05/1985
Inventor: Burzynski ,   et al.

Hologram recording medium
Patent #: 4842968
Issued on: 06/27/1989
Inventor: Kojima ,   et al.

More ...

Inventors

Application

No. 046822 filed on 03/24/1998

US Classes:

430/290, Light scattering or refractive index image formation359/3, Having particular recording medium430/1, HOLOGRAPHIC PROCESS, COMPOSITION, OR PRODUCT430/2, Composition or product or process of making the same430/270.1, Radiation sensitive composition or product or process of making430/271.1, Identified backing or protective layer containing430/281.1Radiation sensitive composition comprising ethylenically unsaturated compound

Examiners

Primary: Angebranndt, Martin

Attorney, Agent or Firm

Foreign Patent References

  • 6-019040 JP. 01/19/1994
  • 6-148880 JP. 04/19/1994

International Class

G03H 001/02

Abstract

The photorecording medium of the invention is formed by mixing a matrix precursor and a photoactive monomer, and curing the mixture to form the matrix in situ. The reaction by which the matrix precursor is polymerized during the cure is independent from the reaction by which the photoactive monomer is polymerized during writing of data. In addition, the matrix polymer and the polymer resulting from polymerization of the photoactive monomer are compatible with each other. Use of a matrix precursor and photoactive monomer that polymerize by independent reactions substantially prevents cross-reaction between the photoactive monomer and the matrix precursor during the cure and inhibition of subsequent monomer polymerization. Use of a matrix precursor and photoactive monomer that result in compatible polymers substantially avoids phase separation. And in situ formation allows fabrication of media with desirable thicknesses.

Other References

  • Glebov, L.B., et al., "photorefraction in `porous xerogel-photopolymer` composite materials", Sov, Tech. Phys. Lett., vol. 16(6), pp. 445-446, Jun. 1990
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  • "Photopolymers for Holography", by Smothers, W. K. et al., SPIE, 1212 Practical Holography IV, pp. 20-29. (1990)
  • "Optical Holography", by Hariharan, H., Cambridge University Press, pp. 58-61
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