Patent US3128308A successfully refreshed from Google Patents.
US3128308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylenebis (benzhydryloxyalkyl) dialkyl quaternary ammonium compounds
Assignee: Parke Davis and Co LLC
•
Filing: 1960-02-23
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Granted: 1964-04-07
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 Doub Leonard
- 👤 Jr George Rieveschl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:40
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A BIS QUATERNARY COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
7 words
A BIS QUATERNARY COMPOUND OF THE FORMULA
References Cited (Backward Citations)
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Cited
US2532292A
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US2743294A
Cited
US2835676A
Cited
US2783237A
Cited
US2913459A
Cited
US2772310A
Cited
US2949485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |