US3884692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic support
Assignee: Fujifilm Holdings Corp
•
Filing: 1973-03-13
•
Granted: 1975-05-20
•
Expires: 1993-03-13
Abstract
Abstract On the back of a polyolefin laminated paper, a support for photographic light sensitive material, a coating layer composed of colloidal alumina is applied in order to prevent the paper from blistering during microwave heating.
Inventors
- 👤 Nobuhiko Minagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:50
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/02; G03D15/022; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; G03C11/00; G03C11/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
27 words
A PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A. A SUPPORT WHICH COMPRISES A POLYOLEFIN-LAMINATED PAPER HAVING ON ITS BACK A COATING LAYER COMPOSED OF FIBROUS COLLOIDAL ALUMINA (HYDRATE), AND
Claim 2
Dependent Claim
27 words
A PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A. A SUPPORT WHICH COMPRISES A POLYOLEFIN-LAMINATED PAPER HAVING ON ITS BACK A COATING LAYER COMPOSED OF FIBROUS COLLOIDAL ALUMINA (HYDRATE), AND
Claim 3
Dependent Claim
18 words
A photographic light-sensitive material as claimed in claim 1, wherein both surfaces of said paper are polyolefin coated.
Claim 4
Dependent Claim
26 words
A photographic light-sensitive material as claimed in claim 1, wherein the thickness of a polyolefin layer on said paper is from 10 to 100 Mu .
Claim 5
Dependent Claim
22 words
A photographic light-sensitive material as claimed in claim 1, wherein said polyolefin is polyethylene, polypropylene or a mixture of polyethylene and polypropylene.
Claim 6
Dependent Claim
23 words
A photographic light-sensitive material as claimed in claim 1, wherein the size of the alumina is from 1 to 1,000 m Mu .
Claim 7
Dependent Claim
20 words
A photographic light-sensitive material as claimed in claim 1, wherein the coating amount of alumina is more than 0.05 g/m2.
Claim 8
Dependent Claim
23 words
A photographic light-sensitive material as claimed in claim 5, wherein the size of the alumina is from 10 to 100 m Mu .
Claim 9
Dependent Claim
20 words
A photographic light-sensitive material as claimed in claim 6, wherein the coating amount of alumina is less than 1 g/m2.
Claim 10
Dependent Claim
21 words
A photographic light-sensitive material as claimed in claim 1, wherein the paper has a weight of 100 g/m2 to 300 g/m2.
Claim 11
Dependent Claim
15 words
A photographic light-sensitive material as claimed in claim 1, wherein the support polyolefin is polyethylene.
Claim 12
Dependent Claim
14 words
A photographic light-sensitive material as claimed in claim 1, wherein the polyolefin is polypropylene.
Claim 13
Dependent Claim
15 words
A photographic light-sensitive material as claimed in claim 1, wherein the polyolefin is polyethylenepolypropylene mixture.
Claim 14
Dependent Claim
53 words
A photographic light-sensitive material as claimed in claim 4, wherein the polyethylene has a density of about 0.91 to about 0.97 and a melt index of about 1 to about 30 and the polypropyLene has a density of about 0.88 to about 0.91 and a melt index of about 0.1 to about 20.
Claim 15
Dependent Claim
126 words
A photographic light-sensitive material as claimed in claim 4, wherein: a. the paper has a weight of 100 g/m2 to 300 g/m2 and is coated on both sides with a polyolefin layer; b. a polyolefin layer is 10 to 100 Mu thick; c. the alumina has a size of 1 m Mu to 1,000 m Mu ; d. the alumina is present in a layer consisting essentially of alumina in an amount of 0.05 to 1 g/m2; e. the polyethylene has a density of from about 0.91 to about 0.97 and a melt index of from about 1 to about 30; and f. the polypropylene has a density of from about 0.88 to about 0.91 and a melt index of from about 0.1 to about 20.
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |