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US3728422A
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Method of making an image transmitting device
Assignee: Fujifilm Holdings Corp
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Filing: 1971-12-17
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Granted: 1973-04-17
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Expires: 1991-12-17
Abstract
Abstract A method of forming an image transmitting device by forming a sandwich structure comprising a center of a first film having a high refractive index and a low melting point sandwiched between two second films having a low refractive index and a medium melting point, the center being sandwiched between two third filmshaving a high melting point. The sandwich structure is heated and pressed in a grooved mold such that the first film forms columns surrounded by the second film. The pressed sandwich structures may then be stacked and cut.
Inventors
- 👤 F Sugaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:57
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B7/023; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C59/00; B29C59/02; B29C59/026; B29C65/00; B29C65/02; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/436; B29C66/70; B29C66/71; B29C66/73; B29C66/731; B29C66/7311; B29C66/73115; B29C66/733; B29C66/7334; B29C66/73343; B29C66/7336; B29C66/73365; B29C66/73366; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29D; B29D11/00; B29D11/00663; B29D11/0073; B29D11/0074; B32B27/30; B32B27/302; B32B27/306; B32B3/00; B32B3/26; B32B3/30; B32B7/027; B44; B44F; B44F1/00; B44F1/02; B29C33/00; B29C33/42; B29K; B29K2001/00; B29K2025/00; B29K2995/00; B29K2995/0018; B29K2995/0026; B29K2995/0031; B29L; B29L2011/00; B29L2011/0075; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
29 words
The method of claim 1 further comprising: a. stacking a plurality of said pressed sandwich structures; and b. forming a narrow pitch at one end of the stacked structure.
Claim 2
Dependent Claim
17 words
The method of claim 2 further comprising cutting each of said sandwich structures at a different length.
Claim 3
Dependent Claim
16 words
The method of claim 3 wherein each sandwich structure is cut at an angle of 45*.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |