Patent US2633418A successfully refreshed from Google Patents.
US2633418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Herbicidal composition and method of weed control
Assignee: Shell Development Co
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Filing: 1950-07-15
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Granted: 1953-03-31
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Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Lawrence B Scott
- 👤 Richard R Whetstone
- 👤 Johannes Van Overbeek
- 👤 Blondeau Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:44
CPC Classifications
A; A01; A01N; A01N61/00; A01N61/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A COMPOSITION OF MATTER COMPRISING 90-40% OF A HYDROCARBON OIL HAVING AT LEAST A 10% AND LESS THAN 50% AROMATIC CONTENT, SAID OIL BOILING WITHIN THE RANGE OF FROM ABOUT 275* F. TO ABOUT 550* F. AND 10-60% BY WEIGHT OF SAID COMPOSITION OF A CYCLOALIPHATIC CARBOXYLIC ACID SOLUBLE IN SAID OIL AT 20* C., AND HAVING BETWEEN 7 AND 20 CARBON ATOMS PER MOLECULE, SAID ACID HAVING A WATER SOLUBILITY AT 20* C. OF AT LEAST 0.0003 GRAM PER 100 GRAMS OF WATER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |