Patent US2923646A successfully refreshed from Google Patents.
Patent US3101265A successfully refreshed from Google Patents.
US3101265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preventing undesired plant growth
Assignee: Shell USA Inc
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Filing: 1961-03-06
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Granted: 1963-08-20
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar J Smutny
- 👤 Samuel B Soloway
- 👤 Linda C Dowding
- 👤 Johannes Van Overbeek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:48
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A METHOD FOR PREVENTING UNDESIRED GROWTH OF A PLANT, WHICH COMPRISES BRINGING THAT PORTION OF THE PLANT WHOSE FURTHER GROWTH IS UNWANTED INTO CONTACT WITH AN EFFECTIVE AMOUNT OF A SULFONIUM SALT OF THE FORMULA:
Claim 2
Independent Claim
35 words
A METHOD FOR PREVENTING UNDESIRED GROWTH OF A PLANT, WHICH COMPRISES BRINGING THAT PORTION OF THE PLANT WHOSE FURTHER GROWTH IS UNWANTED INTO CONTACT WITH AN EFFECTIVE AMOUNT OF A SULFONIUM SALT OF THE FORMULA:
References Cited (Backward Citations)
US2813898A
Cited
US2854791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |