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Patent US2884455A successfully refreshed from Google Patents.
US2884455A
Expired / Lapsed
US
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Propynyl phenylethylamines and their halogen acid salts
Assignee: Dow Chemical Co
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Filing: 1956-10-29
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Granted: 1959-04-28
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Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 Dale N Robertson
- 👤 Maynard B Chenoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:26
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROPYNYL PHENYLETHYLAMINE HAVING THE FORMULA FIG0-1 IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND PROPYNYL, AND ITS HALOGEN ACID SALTS.
Claim 2
Dependent Claim
25 words
A PROPYNYL PHENYLETHYLAMINE HAVING THE FORMULA FIG0-1 IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND PROPYNYL, AND ITS HALOGEN ACID SALTS.
References Cited (Backward Citations)
US2613208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |