US3663442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Household bleach having stable opacifier
Assignee: Purex Corp Ltd
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Filing: 1970-02-09
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Granted: 1972-05-16
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Expires: 1990-02-09
Abstract
Abstract LIQUID HOUSEHOLD BLEACH HAVING VISUAL OPACITY IS PROVIDED BY THE INCORPORATION INTO THE BLEACH OF CERTAIN STYRENE-VINYL ACID-VINYL SULFONATE TERPOLYMER LATEX WHICH IS HIGHLY RESISTANT TO DETERIORATION IN THE BLEACH. THE LATEX IS PREPARED BY INTRODUCTION OF STYRENE MONOMER INTO A PREFORMED AQUEOUS SOLUTION OF THE VINYL ACID AND VINYL SULFONATE AND A NONCATIONIC SURFACTANT.
Inventors
- 👤 Benjamin R Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3956; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |