US3299568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions plasticized with sulphur
Assignee: Research Corp
•
Filing: 1966-03-01
•
Granted: 1967-01-24
•
Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur V Tobolsky
- 👤 Takahashi Masao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; C08F; C08F8/00; C08F8/34; C08L; C08L81/00; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
THE METHOD WHICH COMPRISES APPLYING A POLYMER FILM AS AN AGRICULTURAL MULCH OVER GROUND WHICH HAS BEEN PLANTED TO CONSERVE WATER AND HEAT DURING PLANT GROWTH, SAID FILM COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLY(ETHYLENE TETRASULPHIDE), POLYETHYLENE AND POLYISOBUTYLENE, INCLUDING IN SAID FILM SUFFICIENT ELEMENTAL SULPHUR TO CAUSE SAID FILM TO CRYSTALLIZE AND DISINTEGRATE TOWARD THE END OF THE GROWING SEASON TO PROVIDE SULPHUR AS ADDITIONAL PLANT FOOD, AND ALLOWING SAID FILM TO SO CRYSTALLIZE AND DISINTEGRATE.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |