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Patent US3134800A successfully refreshed from Google Patents.
US3134800A
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Amino aromatic phosphonates and process of preparation
Assignee: Pharmacia and Upjohn Co
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Filing: 1957-10-21
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Granted: 1964-05-26
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Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Kagan Fred
- 👤 Robert D Birkenmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:44
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3882; C07F9/3834; C07F9/40; C07F9/4003; C07F9/4056
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2638478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |