Patent US3826677A successfully refreshed from Google Patents.
US3826677A
Expired / Lapsed
US
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Poly-1-butene coated release paper
Assignee: Huels AG
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Filing: 1972-02-25
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Granted: 1974-07-30
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Expires: 1992-02-25
Abstract
Abstract A RELEASE COATING PARTICULARLY FOR PAPER PRODUCTS, AP PLIED FROM A HOT MELT OF PREDOMINANTLY ISOTATI POLY-1BUTENE OR COPOLYMERS OF POLY-1-BUTENE HAVING AN AVERAGE MOLECULAR WEIGHT OF 700,000 TO 2,000,000 AND A MELTING RANGE OF ABOUT 120 TO 130*C.
Inventors
- 👤 A Michels
- 👤 K Fleischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:23
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H19/22; D21H27/00; D21H27/001; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31909; Y10T428/31913; Y10T428/3192
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |