US2889366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted alkyl hydrazinium chlorides
Assignee: WR Grace and Co
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Filing: 1956-04-02
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Granted: 1959-06-02
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Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Rudner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:52
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AS A NEW CHEMICAL COMPOUND, 1-PHENYL-1,1-BIS-(2HYDROXYETHYL)HYDRAZINIUM CHLORIDE.
Claim 2
Dependent Claim
7 words
NEW CHEMICAL COMPOUNDS HAVING THE GENERAL FORFORMULA:
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |