US4045469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insecticidal esters of spiro carboxylic acids
Assignee: Procter and Gamble Co
•
Filing: 1973-05-16
•
Granted: 1977-08-30
•
Expires: 1993-05-16
Abstract
Abstract Described are certain spiro carboxylic acids and their allethrolone esters. The esters of these acids possess unique insecticidal properties and are useful as such in home, garden and agricultural applications.
Inventors
- 👤 Wayne I. Fanta
- 👤 Joel I. Shulman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:57
CPC Classifications
C; C07; C07C; C07C61/00; C07C61/12; C07C61/125; C07C61/13; C07C61/16; C07C61/28; C07C61/39; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
2 words
2,2-dimethyl-4,5-benzospiro[2.4]hepta-4,6-diene-1-carboxylic acid.
Claim 2
Dependent Claim
2 words
2,2-dimethyl-4,5-benzospiro[2.4]hepta-4,6-diene-1-carboxylic acid.
Claim 3
Dependent Claim
2 words
2,2-dimethyl-4,5-benzospiro[2.4]hepta-4-ene-1-carboxylic acid.
Claim 4
Dependent Claim
2 words
2,2-dimethyl-4,5-benzospiro[2.4]hepta-4-ene-1-carboxylic acid.
Claim 5
Dependent Claim
9 words
The allethrolone ester of the acid of claim 1.
Claim 6
Dependent Claim
9 words
The allethrolone ester of the acid of claim 2.
Claim 7
Dependent Claim
6 words
The allethrolone ester of 2,2-dimethyl-4,5,6,7-dibenzospiro[2,4]-hepta-4,6-diene-1-carboxylic acid.
Claim 8
Dependent Claim
6 words
The allethrolone ester of 2,2-dimethyl-4,5,6,7-dibenzospiro[2,4]-hepta-4,6-diene-1-carboxylic acid.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |