Patent US3276943A successfully refreshed from Google Patents.
US3276943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic film for thermal insulation
Assignee: Individual
•
Filing: 1961-08-14
•
Granted: 1966-10-04
•
Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Kawamura Yuzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/20; A01G13/24; A01G9/00; A01G9/14; A01G9/1438; B; B32; B32B; B32B27/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A RADIATION REFLECTING PLASTIC FILM FOR USES SUCH AS A THERMALLY INSULATING COVER FOR PLANT LIFE IN AGRICULTURE AND GARDENING, HAVING A MINIMUM THICKNESS NECESSARY FOR ACHIEVING ITS OBJECTIVES, COMPRISING A FIRST INTERMEDIATE LAYER OF A PLASTIC FILM HAVING THEREIN UNIFORMLY DISPERSED A QUANTITY OF A METALLIC POWER, AND SECOND AND THIRD OUTER LAYERS OF A TRANSPARENT THERMOPLASTIC MATERIAL, BONDED ONE ON EACH SIDE OF SAID FIRST INTERMEDIATE LAYER, SAID THREE LAYERS FORMING AN INTEGRALLY LAMINATED BODY, WHEREIN THE RATIO OF THICKNESS OF SAID FIRST INTERMEDIATE LAYER TO THE SAID SECOND AND THIRD OUTER LAYER IS FROM ABOUT 1:4 TO ABOUT 1:5, WHEREIN THE WEIGHT OF THE METALLIC POWDER RELATIVE TO THE TOTAL WEIGHT OF THE FILM IS ABOUT 3.8 TO ABOUT 5% AND WHEREIN THE THICKNESS OF THE SAID LAMINATED BODY IS ABOUT 0.05 MM.
Claim 2
Dependent Claim
136 words
A RADIATION REFLECTING PLASTIC FILM FOR USES SUCH AS A THERMALLY INSULATING COVER FOR PLANT LIFE IN AGRICULTURE AND GARDENING, HAVING A MINIMUM THICKNESS NECESSARY FOR ACHIEVING ITS OBJECTIVES, COMPRISING A FIRST INTERMEDIATE LAYER OF A PLASTIC FILM HAVING THEREIN UNIFORMLY DISPERSED A QUANTITY OF A METALLIC POWER, AND SECOND AND THIRD OUTER LAYERS OF A TRANSPARENT THERMOPLASTIC MATERIAL, BONDED ONE ON EACH SIDE OF SAID FIRST INTERMEDIATE LAYER, SAID THREE LAYERS FORMING AN INTEGRALLY LAMINATED BODY, WHEREIN THE RATIO OF THICKNESS OF SAID FIRST INTERMEDIATE LAYER TO THE SAID SECOND AND THIRD OUTER LAYER IS FROM ABOUT 1:4 TO ABOUT 1:5, WHEREIN THE WEIGHT OF THE METALLIC POWDER RELATIVE TO THE TOTAL WEIGHT OF THE FILM IS ABOUT 3.8 TO ABOUT 5% AND WHEREIN THE THICKNESS OF THE SAID LAMINATED BODY IS ABOUT 0.05 MM.
References Cited (Backward Citations)
US1989371A
Cited
US2774421A
Cited
US2259362A
Cited
US2996709A
Cited
US2601326A
Cited
US2630573A
Cited
US2848591A
Cited
US2799609A
Cited
US3077428A
Cited
US2954349A
Cited
US2993236A
Cited
US3111451A
Cited
US2932323A
Cited
US3069301A
Cited
US2974442A
Cited
US3015133A
Cited
US3143364A
Cited
US3118781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |