Patent US3303609A successfully refreshed from Google Patents.
US3303609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous mulch
Assignee: FMC Corp
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Filing: 1964-11-23
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Granted: 1967-02-14
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Machenry Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:10
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF IMPEDING SOIL EROSION AND PROMOTING PLANT GROWTH COMPRISING DEPOSITING ON THE SOIL A COVER COMPRISING RANDOMLY ARRANGED THIN-WALLED WATER-INSOLUBLE HYDROPHILIC FIBERS HAVING AN AVERAGE WALL THICKNESS NOT EXCEEDING ABOUT THREE MICRONS AND A WATER RETENTION OF AT LEAST ABOUT DOUBLE THAT OF A SOLID FIBER OF LIKE MASS AND COMPOSITION.
Claim 2
Independent Claim
53 words
A METHOD OF IMPEDING SOIL EROSION AND PROMOTING PLANT GROWTH COMPRISING DEPOSITING ON THE SOIL A COVER COMPRISING RANDOMLY ARRANGED THIN-WALLED WATER-INSOLUBLE HYDROPHILIC FIBERS HAVING AN AVERAGE WALL THICKNESS NOT EXCEEDING ABOUT THREE MICRONS AND A WATER RETENTION OF AT LEAST ABOUT DOUBLE THAT OF A SOLID FIBER OF LIKE MASS AND COMPOSITION.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |