US4388104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-Phenylmethoxytetrahydropyran herbicides
Assignee: Shell USA Inc
•
Filing: 1981-10-26
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Granted: 1983-06-14
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Expires: 2001-10-26
Abstract
Abstract Certain 3-phenylmethoxytetrahydropyrans, useful as herbicides.
Inventors
- 👤 James E. Powell
- 👤 Michael D. Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:41
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/08; A; A01; A01N; A01N43/00; A01N43/02; A01N43/04; A01N43/14; A01N43/16; A01N43/90; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07D309/16; C07D309/18; C07D309/20; C07D309/22; C07D309/24; C07D309/26; C07D309/28; C07D309/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A compound of the formula: ##STR5## wherein R is hydrogen, phenyl or alkyl of from one to four carbon atoms, R 1 is hydrogen or alkyl of from one to four carbon atoms, R 2 is hydrogen, R 3 is hydrogen, alkyl of from one to four carbon atoms, phenyl or is a moiety R 5 --O--CH 2 CH 2 --O) m CH(R 6 )--, wherein m is zero, one or two, R 4 is hydrogen, alkyl of from one to four carbon atoms, or a moiety R 5 --O((CH 2 CH 2 )--O) m CH(R 6 )--, R 5 is alkyl of from one to six carbon atoms and R 6 is hydrogen or alkyl of one to four carbon atoms, with the proviso that R 3 and R 2 together can represent the moiety --C(R 7 ) 2 --O--, wherein R 7 is hydrogen or alkyl of from one to four carbon atoms, R 2 representing the oxa (--O--) oxygen therein, X is halogen, and n is zero, one or two.
Claim 2
Dependent Claim
173 words
A compound of the formula: ##STR5## wherein R is hydrogen, phenyl or alkyl of from one to four carbon atoms, R 1 is hydrogen or alkyl of from one to four carbon atoms, R 2 is hydrogen, R 3 is hydrogen, alkyl of from one to four carbon atoms, phenyl or is a moiety R 5 --O--CH 2 CH 2 --O) m CH(R 6 )--, wherein m is zero, one or two, R 4 is hydrogen, alkyl of from one to four carbon atoms, or a moiety R 5 --O((CH 2 CH 2 )--O) m CH(R 6 )--, R 5 is alkyl of from one to six carbon atoms and R 6 is hydrogen or alkyl of one to four carbon atoms, with the proviso that R 3 and R 2 together can represent the moiety --C(R 7 ) 2 --O--, wherein R 7 is hydrogen or alkyl of from one to four carbon atoms, R 2 representing the oxa (--O--) oxygen therein, X is halogen, and n is zero, one or two.
Claim 3
Dependent Claim
22 words
A herbicidal composition comprising a herbicidal amount of a compound of claim 1, and at least one surface-active agent or carrier therefor.
Claim 4
Dependent Claim
32 words
A method for killing unwanted plants at a locus which comprises applying to the locus to be protected a herbicidal amount of a compound of claim 1 or a composition containing it.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |