Patent US2430499A successfully refreshed from Google Patents.
US2430499A
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US
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Composition containing polyvinyl alcohol and lauryl pyridinium chloride
Assignee: Pro Phy Lac Tic Brush Co
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Filing: 1944-01-31
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Granted: 1947-11-11
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Expires: 1964-01-31
Abstract
No abstract record available.
Inventors
- 👤 Gustavus J Esselen
- 👤 Jr Martin H Gurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:23
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/14; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2072302A
Cited
US2104728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |