US3261127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of soil crusting
Assignee: Chevron USA Inc
•
Filing: 1963-07-15
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Granted: 1966-07-19
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Richard L Ferm
- 👤 Charles E Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:38
CPC Classifications
A; A01; A01G; A01G7/00; C; C09; C09K; C09K17/00; C09K17/14; C09K17/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF PREVENTING THE FORMATION OF A CRUST ON THE SURFACE OF SOIL, SAID METHOD COMPRISING DISTRIBUTING POLYBUTENE OVER THE SURFACE OF THE NEWLY SEEDED SOIL, AT A RATE OF FROM ABOUT 0.02 TO ABOUT 0.12 GALLONS PER ONE SQUARE YARD OF THE SOIL SURFACE, SUCH DISTRIBUTION BEING MADE BY SPRAYING POLYBUTENE AS AN AQUEOUS EMULSION OF FROM AOUT 25 TO ABOUT 70% BY WEIGHT OF LIQUID POLYBUTENE HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 1100 TO ABOUT 2800.
Claim 2
Independent Claim
80 words
A METHOD OF PREVENTING THE FORMATION OF A CRUST ON THE SURFACE OF SOIL, SAID METHOD COMPRISING DISTRIBUTING POLYBUTENE OVER THE SURFACE OF THE NEWLY SEEDED SOIL, AT A RATE OF FROM ABOUT 0.02 TO ABOUT 0.12 GALLONS PER ONE SQUARE YARD OF THE SOIL SURFACE, SUCH DISTRIBUTION BEING MADE BY SPRAYING POLYBUTENE AS AN AQUEOUS EMULSION OF FROM AOUT 25 TO ABOUT 70% BY WEIGHT OF LIQUID POLYBUTENE HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 1100 TO ABOUT 2800.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |