Patent US3015989A successfully refreshed from Google Patents.
US3015989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-polarizing film materials and process of preparation
Assignee: Polaroid Corp
•
Filing: 1958-01-27
•
Granted: 1962-01-09
•
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 12:49
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
References Cited (Backward Citations)
US2239718A
Cited
US2454515A
Cited
US2327765A
Cited
US2327872A
Cited
US2271468A
Cited
US2315373A
Cited
US2416510A
Cited
US2739659A
Cited
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 |