US3772234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax-hydrogenated block copolymer compositions and articles made therefrom
Assignee: Shell USA Inc
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Filing: 1971-06-21
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Granted: 1973-11-13
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Expires: 1991-06-21
Abstract
Abstract THE MODIFICATION OF PETROLEUM WAXES WITH CERTAIN HYDROGENATED BLOCK COPOLYMERS SUBSTANTIALLY IMPROVES THEIR FLEXIBILITY AND TOUGHNESS AS WELL AS OTHER PROPERTIES PARTICULARLY DESIRABLE IN PAPER OR FILM COATING AS WELL AS FOR LAMINATION PURPOSES AND CARPET BACKING.
Inventors
- 👤 L Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |