US2848475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted methylene bis
Assignee: BASF Schweiz AG
•
Filing: 1954-04-09
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Granted: 1958-08-19
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Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:26
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4025; C07F9/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
AN ORGANIC COMPOUND CONTAINING PHOSPHORUS, WHICH CORRESPONDS TO THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
AN ORGANIC COMPOUND CONTAINING PHOSPHORUS, WHICH CORRESPONDS TO THE GENERAL FORMULA
References Cited (Backward Citations)
US2651656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |