US4025688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarizer lamination
Assignee: Polaroid Corp
•
Filing: 1975-11-24
•
Granted: 1977-05-24
•
Expires: 1995-11-24
Abstract
Abstract A novel reflective light-polarizing lamination comprising a light polarizer laminated to the matte surface of aluminum foil and useful in display cells for field-effect transition liquid crystal displays.
Inventors
- 👤 Alexander W. Nagy
- 👤 Giorgio B. Trapani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:36
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B7/00; B32B7/04; B32B7/12; G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133528; B32B2307/00; B32B2307/40; B32B2307/416; B32B2307/42; B32B2457/00; B32B2457/20; B32B2457/202; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A light-polarizing light reflective lamination comprising a layer of aluminum foil having at least one matte surface and a light-polarizing film having first and second surfaces, said first surface being adhesively bonded with a transparent thermoplastic synthetic resin to said matte surface of said aluminum foil.
Claim 2
Dependent Claim
46 words
A light-polarizing light reflective lamination comprising a layer of aluminum foil having at least one matte surface and a light-polarizing film having first and second surfaces, said first surface being adhesively bonded with a transparent thermoplastic synthetic resin to said matte surface of said aluminum foil.
Claim 3
Dependent Claim
34 words
The lamination of claim 1 wherein said light-polarizing film comprises a stretched synthetic plastic material and said matte surface of said foil comprises grooves generally aligned with the stretch axis of said light-polarizing film.
Claim 4
Dependent Claim
11 words
The lamination of claim 1 wherein said aluminum foil is anodized.
Claim 5
Dependent Claim
46 words
The lamination of claim 1 which further comprises a support layer for said light-polarizing film, said support layer having first and second surfaces, said first surface of said support layer being adhesively bonded to said second surface of said light-polarizing film with a hydrophilic tie coat.
Claim 6
Dependent Claim
32 words
The lamination of claim 4 which includes a layer of adhesive on the second surface of said support layer whereby said lamination may be adhered to a field-effect transition liquid crystal device.
Claim 7
Dependent Claim
15 words
The lamination of claim 5 wherein said layer of adhesive is a water remoistenable adhesive.
References Cited (Backward Citations)
US2524286A
Cited
US2776598A
Cited
US3208902A
Cited
US3712849A
Cited
US3313052A
Cited
US3531351A
Cited
US3499702A
Cited
US3545998A
Cited
US3833289A
Cited
US3719544A
Cited
US3832034A
Cited
US3837729A
Cited
US3914022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |