US4519065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized information carrying discs
Assignee: 3M Co
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Filing: 1982-08-09
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Granted: 1985-05-21
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Expires: 2002-08-09
Abstract
Abstract Coded information bearing elements such as video discs may be produced from multilayered articles. The articles comprise a base having a thermoplastic, radiation curable resin on one surface and an embossable electrically conductive or radiation reflective layer over said resin.
Inventors
- 👤 Terry W. Lewis
- 👤 Roger J. Anderson
- 👤 Donald J. Kerfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:55
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/26; G11B23/00; G11B23/0057
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
A multilayered article for use in the manufacture of coded information bearing surfaces which may be electronically decoded comprising: (a) a base having at least one surface which is a layer of a thermoplastic, radiation curable polymeric resin, wherein said layer of polymeric resin exhibits a maximum loss modulus which appears between 30° and 180° C., (b) an embossable electrically conductive or electromagnetic radiation reflective layer over said at least one surface, said embossable layer comprising metal having a thickness in the range of 0.2 to 60 nm.
Claim 2
Dependent Claim
88 words
A multilayered article for use in the manufacture of coded information bearing surfaces which may be electronically decoded comprising: (a) a base having at least one surface which is a layer of a thermoplastic, radiation curable polymeric resin, wherein said layer of polymeric resin exhibits a maximum loss modulus which appears between 30° and 180° C., (b) an embossable electrically conductive or electromagnetic radiation reflective layer over said at least one surface, said embossable layer comprising metal having a thickness in the range of 0.2 to 60 nm.
Claim 3
Dependent Claim
102 words
A multilayered article for use in the manufacture of coded information bearing surfaces which may be electronically decoded comprising: (a) a base having at least one surface which is a layer of a thermoplastic, radiation curable polymeric resin, wherein said layer of polymeric resin exhibits a maximum loss modulus which appears between 30° and 180° C. and said radiation curable polymeric resin contains a multiplicity of acryloyl or methacryloyl groups, (b) an embossable electrically conductive or electromagnetic radiation reflective layer over said at least one surface, said embossable layer comprising metal having a thickness in the range of 0.2 to 60 nm.
Claim 4
Dependent Claim
102 words
A multilayered article for use in the manufacture of coded information bearing surfaces which may be electronically decoded comprising: (a) a base having at least one surface which is a layer of a thermoplastic, radiation curable polymeric resin, wherein said layer of polymeric resin exhibits a maximum loss modulus which appears between 30° and 180° C. and said radiation curable polymeric resin contains a multiplicity of acryloyl or methacryloyl groups, (b) an embossable electrically conductive or electromagnetic radiation reflective layer over said at least one surface, said embossable layer comprising metal having a thickness in the range of 0.2 to 60 nm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |