US3361830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making polyphosphines
Assignee: GE Chemicals Inc
•
Filing: 1963-05-22
•
Granted: 1968-01-02
•
Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Max Van Ghemen
- 👤 Wiberg Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:25
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |