US2594560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature polymerization of ethylenic compounds using as initiators compositions comprising sodium azide and an oxidant
Assignee: EIDP Inc
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Filing: 1950-04-27
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Granted: 1952-04-29
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward G Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
C; C08; C08F; C08F4/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN THE ADDITION POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS SUBJECT TO ADDITION POLYMERIZATION, THE IMPROVEMENT WHEREIN SAID MONOMER IS POLYMERIZED IN AQUEOUS DISPERSION BY CONTACT WITH AN INITIATOR SYSTEM COMPRISING AZIDE ION AND AN OXIDANT THEREOF OF THE CLASS CONSISTING OF PERIODATE, HYPOCHLORITE, PERMANGANATE, BROMATE, AND CERIC ION, THE LATTER TWO IN ACIDIC DISPERSION.
Claim 2
Dependent Claim
53 words
IN THE ADDITION POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS SUBJECT TO ADDITION POLYMERIZATION, THE IMPROVEMENT WHEREIN SAID MONOMER IS POLYMERIZED IN AQUEOUS DISPERSION BY CONTACT WITH AN INITIATOR SYSTEM COMPRISING AZIDE ION AND AN OXIDANT THEREOF OF THE CLASS CONSISTING OF PERIODATE, HYPOCHLORITE, PERMANGANATE, BROMATE, AND CERIC ION, THE LATTER TWO IN ACIDIC DISPERSION.
References Cited (Backward Citations)
US2460606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |