US3173944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted amonomethane-phosphonic acids
Assignee: Novartis Corp
•
Filing: 1959-07-29
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Granted: 1965-03-16
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Expires: 1979-07-29
Abstract
No abstract record available.
Inventors
- 👤 Kroll Harry
- 👤 Knell Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE AMINOMETHANEPHOSPHONIC ACIDS OF THE FORMULA.
Claim 2
Dependent Claim
14 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE AMINOMETHANEPHOSPHONIC ACIDS OF THE FORMULA.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |