Patent US2550503A successfully refreshed from Google Patents.
US2550503A
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Granular polyvinyl resins
Assignee: EIDP Inc
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Filing: 1947-07-01
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Granted: 1951-04-24
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Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Turnbull Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; C08J2331/00; C08J2331/02; C08J2331/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE PROCESS WHICH COMPRISES APPLYING TO THE SURFACES OF A GRANULAR, THERMOPLASTIC POLYMERIZED VINYL CARBOXYLATE, IN THE PROPORTION OF 0.1 TO 5% OF THE DRY WEIGHT OF SAID CARBOXYLATE, A ROSIN PRODUCT SELECTED FROM THE GROUP CONSISTING OF ROSIN, ABIETIC ACID, HYDROGENATED ROSIN AND POLYMERIZED ROSIN.
Claim 2
Dependent Claim
46 words
THE PROCESS WHICH COMPRISES APPLYING TO THE SURFACES OF A GRANULAR, THERMOPLASTIC POLYMERIZED VINYL CARBOXYLATE, IN THE PROPORTION OF 0.1 TO 5% OF THE DRY WEIGHT OF SAID CARBOXYLATE, A ROSIN PRODUCT SELECTED FROM THE GROUP CONSISTING OF ROSIN, ABIETIC ACID, HYDROGENATED ROSIN AND POLYMERIZED ROSIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |