US3015989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-polarizing film materials and process of preparation
Assignee: Polaroid Corp
•
Filing: 1958-01-27
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Granted: 1962-01-09
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Expires: 1978-01-27
Abstract
No abstract record available.
Inventors
- 👤 John P Delangre
- 👤 Cane Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:45
CPC Classifications
G; G03; G03C; G03C9/00; G03C9/04; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ORGANIC DYE LIGHT-POLARIZING FILM MATERIAL HAVING AN IMPROVED DYE DENSITY AND POLARIZING EFFICIENCY SAID FILM MATERIAL COMPRISING A TRANSPARENT, HIGH MOLECULAR WEIGHT, HYDROXYL-CONTAINING VINYL POLYMER HAVING ITS MOLECULES SUBSTANTIALLY ORIENTED IN A GIVEN DIRECTION, AT LEAST ONE DICHROIC DIRECT COTTON DYE CONTAINED IN AT LEAST A GIVEN AREA OF SAID FILM MATERIAL SO AS TO RENDER SAID AREA LIGHT POLARIZING, AND A MORDANT HAVING AN AFFINITY FOR SAID DICHROIC DIRECT COTTON DYE WHICH ENCHANCES THE RECEPTIVITY OF SAID MOLECULARLY ORIENTED VINYL POLYMER
Claim 2
Dependent Claim
83 words
AN ORGANIC DYE LIGHT-POLARIZING FILM MATERIAL HAVING AN IMPROVED DYE DENSITY AND POLARIZING EFFICIENCY SAID FILM MATERIAL COMPRISING A TRANSPARENT, HIGH MOLECULAR WEIGHT, HYDROXYL-CONTAINING VINYL POLYMER HAVING ITS MOLECULES SUBSTANTIALLY ORIENTED IN A GIVEN DIRECTION, AT LEAST ONE DICHROIC DIRECT COTTON DYE CONTAINED IN AT LEAST A GIVEN AREA OF SAID FILM MATERIAL SO AS TO RENDER SAID AREA LIGHT POLARIZING, AND A MORDANT HAVING AN AFFINITY FOR SAID DICHROIC DIRECT COTTON DYE WHICH ENCHANCES THE RECEPTIVITY OF SAID MOLECULARLY ORIENTED VINYL POLYMER
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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) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |