Patent US3718533A successfully refreshed from Google Patents.
US3718533A
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US
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Composite sheets for agricultural use
Assignee: Individual
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Filing: 1970-12-16
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Granted: 1973-02-27
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Expires: 1990-12-16
Abstract
Abstract A COMPOSITE SHEET FOR AGRICULTURAL USE COMPRISES A BASE LAYER OF POLYVINYLCHLORIDE, A POLYESTER FILM, AN ALUMINUM FILM VAPOR DEPOSITED ON THE POLYESTER FILM TO A THICKNESS OF 80 TO 400 A., A PROTECTIVE LAYER MADE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYAMIDE AND AN EPOXIDE RESIN AND APPLIED ON THE SURFACE OF THE ALUMINUM FILM, AND A BONDING AGENT CEMENTING THE SURFACE OF THE PROTECTIVE LAYER TO THE BASE LAYER. THE COMPOSITE SHEET TRANSMITS APPROXIMATELY 55% OF VISIBLE RAYS, BUT ONLY APROXIMATELY 30% OF INFARRED RAYS AND APPROXIMATELY 12 TO 30% OF ULTRAVIOLET RAYS.
Inventors
- 👤 S Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:48
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; B32B33/00; B32B2307/00; B32B2307/40; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |