Patent US3022543A successfully refreshed from Google Patents.
US3022543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing film having improved shrink energy
Assignee: WR Grace and Co
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Filing: 1958-02-07
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Granted: 1962-02-27
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Expires: 1978-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr William G Baird
- 👤 Jr Carl A Lindstrom
- 👤 Jr Arthur L Besse
- 👤 Entremont Donald J D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/08; B29C61/003; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/0022; B29C48/03; B29C48/09; B29C48/10; B29C61/10; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2995/00; B29K2995/0018; B29K2995/0026; B29K2995/0037; B29K2995/005; B29K2995/0053; Y; Y10; Y10S; Y10S128/00; Y10S128/18; Y10S425/00; Y10S425/053; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METHOD OF PRODUCING FILM OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, PLYPROPYLENE, COPOLYMERS OF ETHYLENE WITH AN OLEFIN HAVING 3 TO 5, CARBON ATOMS, COPOLYMERS OF ETHYLENE WITH ACETYLENE, GRAFT COPOLYMERS OF POLYETHYLENE WITH AN OLEFIN HAVING 3 TO 5 CARBON ATOMS, GRAFT COPOLYMERS OF POLYPROPYLENE WITH AN OLEFIN HAVING 3 TO 5 CARBON ATOMS, GRAFT COPOLYMERS OF POLYPROPYLENE WITH ACETYLENE, A MIXTURE OF POLYETHYLENE AND POLYISOBUTYLENE HAVING IMPROVED SHRINK
Claim 2
Independent Claim
74 words
A METHOD OF PRODUCING FILM OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, PLYPROPYLENE, COPOLYMERS OF ETHYLENE WITH AN OLEFIN HAVING 3 TO 5, CARBON ATOMS, COPOLYMERS OF ETHYLENE WITH ACETYLENE, GRAFT COPOLYMERS OF POLYETHYLENE WITH AN OLEFIN HAVING 3 TO 5 CARBON ATOMS, GRAFT COPOLYMERS OF POLYPROPYLENE WITH AN OLEFIN HAVING 3 TO 5 CARBON ATOMS, GRAFT COPOLYMERS OF POLYPROPYLENE WITH ACETYLENE, A MIXTURE OF POLYETHYLENE AND POLYISOBUTYLENE HAVING IMPROVED SHRINK
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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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |