Patent US2964549A successfully refreshed from Google Patents.
US2964549A
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US
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Alkanolaminealkanephosphonic acids and derivatives thereof
Assignee: Victor Chemical Works
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Filing: 1958-06-16
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Granted: 1960-12-13
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 William M Ramsey
- 👤 Kezerian Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/3817; C05; C05D; C05D9/00; C05D9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A CONSTITUENT FROM THE GROUP CONSISTING OF: (A) A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A CONSTITUENT FROM THE GROUP CONSISTING OF: (A) A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2227963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |