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Patent US4681834A successfully refreshed from Google Patents.
US4681834A
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Optical recording element
Assignee: Individual
•
Filing: 1986-03-10
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Granted: 1987-07-21
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Expires: 2006-03-10
Abstract
Abstract An optical recording element comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer of film-forming polymeric dye having a light absorptivity of at least about 0.046 in the visible and/or infrared spectral regions.
Inventors
- 👤 Howard E. Simmons, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:11
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/245; C; C09; C09B; C09B69/00; C09B69/10; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
An optical recording element comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer comprising a film-forming polymeric dye diluted with an inert, transparent and compatible polymer to lower the light absorption level thereof, said light-absorptive material having a light absorptivity of at least 0.046 in the visible and/or infrared spectral regions.
Claim 2
Dependent Claim
64 words
An optical recording element comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer comprising a film-forming polymeric dye diluted with an inert, transparent and compatible polymer to lower the light absorption level thereof, said light-absorptive material having a light absorptivity of at least 0.046 in the visible and/or infrared spectral regions.
Claim 3
Dependent Claim
67 words
An optical recording element having bilayer configuration comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer comprising a film-forming polymeric dye diluted with an inert, transparent and compatible polymer to lower the light absorption level thereof, said light-absorptive material having a light absorptivity of at least 0.046 in the visible and/or infrared spectral regions.
Claim 4
Dependent Claim
67 words
An optical recording element having bilayer configuration comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer comprising a film-forming polymeric dye diluted with an inert, transparent and compatible polymer to lower the light absorption level thereof, said light-absorptive material having a light absorptivity of at least 0.046 in the visible and/or infrared spectral regions.
References Cited (Backward Citations)
US3314073A
Cited
US3474457A
Cited
US3723121A
Cited
US4305081A
Cited
US4097895A
Cited
US4190843A
Cited
US4023185A
Cited
US4270132A
Cited
US4101907A
Cited
US4315269A
Cited
US4242689A
Cited
US4241355A
Cited
US4219826A
Cited
US4222071A
Cited
US4388387A
Cited
US4365012A
Cited
US4360908A
Cited
US4360583A
Cited
US4465767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |