Patent US3544606A successfully refreshed from Google Patents.
US3544606A
Expired / Lapsed
US
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Process for making sarcosines
Assignee: WR Grace and Co
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Filing: 1969-01-21
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Granted: 1970-12-01
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Expires: 1989-01-21
Abstract
No abstract record available.
Inventors
- 👤 John J Singer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:13
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195; C; C07; C07C; C07C233/00; C07C233/01; C07C233/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2126180A
Cited
US2689170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |