Patent US4155995A successfully refreshed from Google Patents.
US4155995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum based mosquito larvicide
Assignee: GOLDEN BEAR ACQUISITION CORP
•
Filing: 1977-09-30
•
Granted: 1979-05-22
•
Expires: 1997-09-30
Abstract
Abstract A highly effective petroleum-based mosquito larvicide having dispersed therein minor amounts of a dialkyl polysiloxane and an ethoxylated mono-alkyl phenol.
Inventors
- 👤 Heinz D. Heinz
- 👤 Steven J. Escobar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:29
CPC Classifications
A; A01; A01N; A01N61/00; A01N61/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A larvicidal composition comprising a larvicidal refined petroleum oil boiling in the range of about 500°- 750° F. having dispersed therein from about 0.2- 0.8 weight percent of a di-lower-alkyl polysiloxane and about 0.3 to 2.0 weight percent of an ethoxylated C 8 - C 12 mono-alkyl phenol having 2-5 ethoxy groups.
Claim 2
Dependent Claim
52 words
A larvicidal composition comprising a larvicidal refined petroleum oil boiling in the range of about 500°- 750° F. having dispersed therein from about 0.2- 0.8 weight percent of a di-lower-alkyl polysiloxane and about 0.3 to 2.0 weight percent of an ethoxylated C 8 - C 12 mono-alkyl phenol having 2-5 ethoxy groups.
Claim 3
Dependent Claim
25 words
A larvicidal composition as in claim 1, wherein the petroleum oil is a refined naphthenic raffinate boiling in the range of about 550°- 675° F.
Claim 4
Dependent Claim
37 words
A larvicidal composition as in claim 1, wherein the ethoxylated C 8 - C 12 mono-alkyl phenol is present at about 1.0- 1.2 weight percent and the di-lower-alkyl polysiloxane is present at about 0.3- 0.4 weight percent.
Claim 5
Dependent Claim
24 words
A larvicidal composition as in claim 1 wherein the dialkyl polysiloxane is dimethyl polysiloxane having a viscosity of about 50 cs at 25° C.
Claim 6
Dependent Claim
19 words
A larvicidal composition as in claim 1 wherein the C 8 - C 12 mono-alkyl phenol is nonyl phenol.
Claim 7
Dependent Claim
33 words
A larvicidal composition as in claim 1 wherein 0.3 weight percent of dimethyl polysiloxane and 1.0 weight percent of ethoxylated nonyl phenol having 3-4 ethoxy groups are dispersed in said larvicidal petroleum oil.
References Cited (Backward Citations)
US2096885A
Cited
US2560626A
Cited
US2774709A
Cited
US2988473A
Cited
US3285201A
Cited
US3499969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |