US3332889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous polymeric reaction products of phosphorus and a polyamine
Assignee: Wyeth Holdings LLC
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Filing: 1964-02-17
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Granted: 1967-07-25
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Epstein Martin
- 👤 Sheldon A Buckler
- 👤 Sherr Allan Ellis
- 👤 Gillham Helen Currier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:14
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD FOR THE PRODUCTION OF A RESINOUS POLYMER HAVING A HIGH PHOSPHORUS AND NITROGEN CONTENT WHICH COMPRISES REACTING ELEMENTAL PHOSPHORUS WITH A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF ALKYLENE AND ARYLENE POLYAMINES AND COMPOUNDS HAVING THE FORMULA
Claim 2
Independent Claim
39 words
A METHOD FOR THE PRODUCTION OF A RESINOUS POLYMER HAVING A HIGH PHOSPHORUS AND NITROGEN CONTENT WHICH COMPRISES REACTING ELEMENTAL PHOSPHORUS WITH A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF ALKYLENE AND ARYLENE POLYAMINES AND COMPOUNDS HAVING 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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |