US2975028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus compounds and process for making
Assignee: Pennwalt Corp
•
Filing: 1956-02-15
•
Granted: 1961-03-14
•
Expires: 1976-02-15
Abstract
No abstract record available.
Inventors
- 👤 Barth-Wehrenalp Gerhard
- 👤 Kowalski Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:39
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/097; C01B21/098; C01B21/0986
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
A NEW COMPOSITION OF MATTER HAVING THE STRUCTURAL FORMULA PNX2.2PX5, IN WHICH X IS A HALOGEN.
Claim 2
Dependent Claim
16 words
A NEW COMPOSITION OF MATTER HAVING THE STRUCTURAL FORMULA PNX2.2PX5, IN WHICH X IS A HALOGEN.
Claim 3
Dependent Claim
29 words
A PROCESS FOR THE PRODUCTION OF PNX2.2PX5, IN WHICH X IS A HALOGEN, COMPRISING REACTING A PHOSPHORUS PENTHALIDE WITH AN AMMONIUM HALIDE IN THE PRESENCE OF A PHOSPHORUS OXYHALIDE.
Claim 4
Dependent Claim
29 words
A PROCESS FOR THE PRODUCTION OF PNX2.2PX5, IN WHICH X IS A HALOGEN, COMPRISING REACTING A PHOSPHORUS PENTHALIDE WITH AN AMMONIUM HALIDE IN THE PRESENCE OF A PHOSPHORUS OXYHALIDE.
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) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |