US4146619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siloxane toxicants
Assignee: Block Drug Co Inc
•
Filing: 1977-05-31
•
Granted: 1979-03-27
•
Expires: 1997-05-31
Abstract
Abstract Linear siloxane polymers have been found to exhibit pediculicidal and/or ovicidal activity.
Inventors
- 👤 Myron J. Lover
- 👤 Arnold J. Singer
- 👤 Donald M. Lynch
- 👤 William E. Rhodes, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
A; A01; A01N; A01N55/00; A61; A61P; A61P33/00; A61P33/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
A method of controlling ectoparasites or their ova which comprises applying to an animal or human in need of such control, an effective toxic amount of at least one linear siloxane polymer having repeating units R 2 SiO in which each R is individually alkyl or aryl and having a viscosity of less than about 20,000 centistokes.
Claim 2
Independent Claim
57 words
A method of controlling ectoparasites or their ova which comprises applying to an animal or human in need of such control, an effective toxic amount of at least one linear siloxane polymer having repeating units R 2 SiO in which each R is individually alkyl or aryl and having a viscosity of less than about 20,000 centistokes.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said polymer has a viscosity of less than about 10,000 centistokes.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said polymer has a viscosity of about 1,000 centistokes or less.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said polymer is dimethicone or phenyldimethicone.
Claim 6
Dependent Claim
10 words
The method of claim 1 wherein said polymer is simethicone.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein said polymer is employed in combination with an inert pharmaceutically acceptable carrier.
Claim 8
Dependent Claim
10 words
The method of claim 6 wherein said carrier is aqueous.
References Cited (Backward Citations)
CA503996A
Cited
CA829873A
Cited
US2727846A
Cited
US2681878A
Cited
US3470292A
Cited
US3567820A
Cited
US3880996A
Cited
US3953591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |