US4302497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorated synthetic resin sheet
Assignee: Mitsubishi Chemical Corp
•
Filing: 1980-02-20
•
Granted: 1981-11-24
•
Expires: 2000-02-20
Abstract
Abstract A decorated synthetic resin sheet is formed by a continuously cast sheet of polymerized synthetic resin syrup integrally joined on at least one side with one side of an unwrinkled uniformly thick preformed film of polymerized synthetic resin that is compatible with the cast syrup. The film and sheet are integrally joined together to form a homogeneous product.
Inventors
- 👤 Yasuo Toyooka
- 👤 Kunio Ohnishi
- 👤 Haruo Murase
- 👤 Tadaomi Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:09
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/08; B32B38/10; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J2333/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/31504; Y10T428/31507; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A synthetic resin sheet product comprising a continuously cast sheet of polymerized synthetic resin syrup integrally joined on at least one side with one side of an unwrinkled uniformly thick preformed film of polymerized synthetic resin that is compatible with said syrup and on which said syrup has been continuously cast so as to initially cause partial softening and dissolving of said one side of the film with the syrup and subsequent integration therewith by polymerization of the syrup, said sheet being continuously cast with a uniform thickness throughout.
Claim 2
Dependent Claim
89 words
A synthetic resin sheet product comprising a continuously cast sheet of polymerized synthetic resin syrup integrally joined on at least one side with one side of an unwrinkled uniformly thick preformed film of polymerized synthetic resin that is compatible with said syrup and on which said syrup has been continuously cast so as to initially cause partial softening and dissolving of said one side of the film with the syrup and subsequent integration therewith by polymerization of the syrup, said sheet being continuously cast with a uniform thickness throughout.
Claim 3
Dependent Claim
57 words
The product of claim 1 in which said film is transparent and its said one side has printing applied to it prior to said syrup being cast on it, said printing being integrally buried undistorted and without loss of definition within said product in the film's said one side which partially softened and dissolved in said syrup.
Claim 4
Dependent Claim
13 words
The product of claim 1 in which said syrup is an acrylic resin.
Claim 5
Dependent Claim
14 words
The product of claim 1 in which said syrup is a methyl methacrylate resin.
Claim 6
Dependent Claim
16 words
The product of claim 1 in which said film is a film of polymerized acrylic resin.
Claim 7
Dependent Claim
16 words
The product of claim 1 in which said film is a film of polymerized polyvinyl chloride.
Claim 8
Dependent Claim
15 words
The product of claim 1 in which said film is a film of polymerized polycarbonate.
Claim 9
Dependent Claim
43 words
The product of claims 1, 2, 3, 4, 5, 6 or 7 in which the other side of said film is integrally joined with an outermost surface coating of said polymerized syrup, said coating forming an outside surface having a smoothly polished finish.
References Cited (Backward Citations)
US2628180A
Cited
US2810673A
Cited
US2997745A
Cited
US2994632A
Cited
US3342668A
Cited
US3458348A
Cited
US3488246A
Cited
US3600490A
Cited
US4041120A
Cited
US3978178A
Cited
US3975561A
Cited
US4089918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |