US3386979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet light polarizers from vinyl monomers polymerized in the presence of polyphenyl chain transfer agents
Assignee: Polaroid Corp
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Filing: 1963-05-15
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Granted: 1968-06-04
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Expires: 1983-05-15
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:47
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3075; C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08F18/00; C08F18/02; C08F18/04; C08F18/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
AN ULTRAVIOLET LIGHT POLARIZER COMPRISING A MOLECULARLY ORIENTED FILM COMPRISING A POLYMER PREPARED BY POLYMERIZING A VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND VINYL ACETATE IN THE PRESENCE OF A FREE RADICAL CATALYST AND A POLYPHENYL CHAIN TRANSFER AGENT COMPRISING LESS THAN FIVE PHENYLENE GROUPS.
Claim 2
Dependent Claim
49 words
AN ULTRAVIOLET LIGHT POLARIZER COMPRISING A MOLECULARLY ORIENTED FILM COMPRISING A POLYMER PREPARED BY POLYMERIZING A VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND VINYL ACETATE IN THE PRESENCE OF A FREE RADICAL CATALYST AND A POLYPHENYL CHAIN TRANSFER AGENT COMPRISING LESS THAN FIVE PHENYLENE GROUPS.
Claim 3
Dependent Claim
36 words
AN ULTRAVIOLET LIGHT POLARIZER COMPRISING A MOLECULARLY ORIENTED FILM COMPRISING A VINYL POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND POLYVINYL ALCOHOL CONTAINING LINEAR POLYPHENYL CHAIN TERMINATING GROUPS COMPRISING LESS THAN FIVE PHENYLENE GROUPS.
Claim 4
Dependent Claim
36 words
AN ULTRAVIOLET LIGHT POLARIZER COMPRISING A MOLECULARLY ORIENTED FILM COMPRISING A VINYL POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND POLYVINYL ALCOHOL CONTAINING LINEAR POLYPHENYL CHAIN TERMINATING GROUPS COMPRISING LESS THAN FIVE PHENYLENE GROUPS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |