US2820028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of monomeric vinyl halide compounds to uniform homogeneous granules
Assignee: Huels AG
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Filing: 1953-08-24
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Granted: 1958-01-14
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Wenning Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08F14/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
PROCESS FOR THE POLYMERIZATION OF A MONOMERIC VINYL COMPOUND TO HOMOGENEOUS, UNIFORM GRANULES WHICH COMPRISES POLYMERIZING A VINYL COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
23 words
PROCESS FOR THE POLYMERIZATION OF A MONOMERIC VINYL COMPOUND TO HOMOGENEOUS, UNIFORM GRANULES WHICH COMPRISES POLYMERIZING A VINYL COMPOUND OF THE GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |