Patent US2572028A successfully refreshed from Google Patents.
US2572028A
Expired / Lapsed
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Hydrazodisulfonate-positive halogen oxidizing agent systems for polymerization initiation
Assignee: EIDP Inc
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Filing: 1950-02-03
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Granted: 1951-10-23
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Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 Hunt Madison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:25
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
PROCESS FOR THE POLYMERIZATION OF A MONOMER SUBJECT TO ADDITION POLYMERIZATION AND CONTAINING AN ETHYLENIC DOUBLE BOND WHICH COMPRISES BRINGING SAID MONOMER IN CONTACT, IN AN AQUEOUS SYSTEM, WITH A WATER SOLUBLE HYDRAZODISULFONATE AND A COMPOUND CONTAINING POSITIVE MONOVALENT HALOGEN.
Claim 2
Dependent Claim
40 words
PROCESS FOR THE POLYMERIZATION OF A MONOMER SUBJECT TO ADDITION POLYMERIZATION AND CONTAINING AN ETHYLENIC DOUBLE BOND WHICH COMPRISES BRINGING SAID MONOMER IN CONTACT, IN AN AQUEOUS SYSTEM, WITH A WATER SOLUBLE HYDRAZODISULFONATE AND A COMPOUND CONTAINING POSITIVE MONOVALENT HALOGEN.
References Cited (Backward Citations)
GB333894A
Cited
US2429060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |