US2495255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric polyamines
Assignee: EIDP Inc
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Filing: 1948-01-28
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Granted: 1950-01-24
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Expires: 1968-01-28
Abstract
No abstract record available.
Inventors
- 👤 Harvey H Hoehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02; C08G73/00; C08G73/02; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/61; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A POLYMERIC POLYAMINE WHICH IS THE REACTION PRODUCT OF THE REDUCTIVE-AMINATION OF A POLYMER OF A MONOOLEFIN CONTAINING FROM 2 TO 4 CARBON ATOMS WITH CARBON MONOXIDE IN WHICH THE MOLE RATIO OF MONOOLEFIN TO CARBON MONOXIDE IS FROM 150:1 TO 1:1, SAID POLYMERIC POLYAMINE HAVING A MAIN CARBON CHAIN AND AMINO-NITROGENS ATTACHED SOLELY TO MEMBERS OF THE CLASS CONSISTING OF HYDROGEN AND HYDROCARBON AS LATERAL SUBSTITUENT GROUPS WITH THE NITROGEN THEREOF DIRECTLY ATTACHED TO A CARBON ATOM WHICH IS AN INTEGRAL PART OF SAID MAIN CARBON CHAIN.
Claim 2
Dependent Claim
88 words
A POLYMERIC POLYAMINE WHICH IS THE REACTION PRODUCT OF THE REDUCTIVE-AMINATION OF A POLYMER OF A MONOOLEFIN CONTAINING FROM 2 TO 4 CARBON ATOMS WITH CARBON MONOXIDE IN WHICH THE MOLE RATIO OF MONOOLEFIN TO CARBON MONOXIDE IS FROM 150:1 TO 1:1, SAID POLYMERIC POLYAMINE HAVING A MAIN CARBON CHAIN AND AMINO-NITROGENS ATTACHED SOLELY TO MEMBERS OF THE CLASS CONSISTING OF HYDROGEN AND HYDROCARBON AS LATERAL SUBSTITUENT GROUPS WITH THE NITROGEN THEREOF DIRECTLY ATTACHED TO A CARBON ATOM WHICH IS AN INTEGRAL PART OF SAID MAIN CARBON CHAIN.
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) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |