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US3590528A
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Decomposable polybutene-1 agricultural mulch film
Assignee: Princeton Chemical Research Inc
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Filing: 1969-09-25
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Granted: 1971-07-06
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Expires: 1989-09-25
Abstract
Abstract Polybutene-1 film for use as an agricultural mulch. This film degrades and substantially disintegrates of its own volition within a growing season.
Inventors
- 👤 Thomas H Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:15
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/32; A01G13/33; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0033; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 0
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |