US3324040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous benzoyl peroxide paste
Assignee: US Filter Wallace and Tiernan Inc
•
Filing: 1965-09-17
•
Granted: 1967-06-06
•
Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Peter W Spoor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:40
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A STORAGE STABLE PEROXIDE PASTE COMPOSITION CONSISTING OF, ON A WEIGHT BASIS: SOLID BENZOYL PEROXIDE PARTICLES HAVING A SIZE OF ABOUT 5-30 MICRONS, ABOUT 46-56%; BUTYL BENZYL PHTHALATE, ABOUT 29-38%; WATER, ABOUT 1-4%; NONYLPHENYL POLYETHYLENE GLYCOL ETHER HAVING ABOUT 9-10 ETHYLENE OXIDE GROUPS, ABOUT 8-11%; SILICA HAVING A PARTICLE SIZE OF APPROXIMATELY 0.015 MICRON, ABOUT 3-5%; AND WATER-DISPERSIBLE, FLUID POLYDIMETHYLSILOXANE ANTIFOAMING AGENT, ABOUT 0.5%.
Claim 2
Dependent Claim
64 words
A STORAGE STABLE PEROXIDE PASTE COMPOSITION CONSISTING OF, ON A WEIGHT BASIS: SOLID BENZOYL PEROXIDE PARTICLES HAVING A SIZE OF ABOUT 5-30 MICRONS, ABOUT 46-56%; BUTYL BENZYL PHTHALATE, ABOUT 29-38%; WATER, ABOUT 1-4%; NONYLPHENYL POLYETHYLENE GLYCOL ETHER HAVING ABOUT 9-10 ETHYLENE OXIDE GROUPS, ABOUT 8-11%; SILICA HAVING A PARTICLE SIZE OF APPROXIMATELY 0.015 MICRON, ABOUT 3-5%; AND WATER-DISPERSIBLE, FLUID POLYDIMETHYLSILOXANE ANTIFOAMING AGENT, ABOUT 0.5%.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |