US3027291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of preventing adhesion
Assignee: Diamond Shamrock Corp
•
Filing: 1957-09-09
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Granted: 1962-03-27
•
Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 James L Foster
- 👤 Frank L Laymon
- 👤 Clyde B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/40; B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN THE PREPARATION OF PAPERBOARD BY ADHESIVELY BONDING CELLULOSIC MATERIALS WITH AN ALKALI METAL SILICATE ADHESIVE, THE IMPROVEMENT WHICH COMPRISES CONTACTING METAL SURFACES COMING IN CONTACT WITH SAID ADHESIVE WITH A SILICONE-CONTAINING COMPOSITION APPLIED AS A SEPARATE COATING TO SAID SURFACES, SAID SILICONE BEING PRESENT IN AN AMOUNT SUFFICIENT TO PREVENT ADHESION OF SAID SILICATE TO SAID METAL SURFACES.
Claim 2
Dependent Claim
54 words
THE IMPROVEMENT AS CLAIMED IN CLAIM 2 WHEREIN THE SILICONE IS APPLIED TO THE METAL SURFACES IN A COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND A MINOR PROPORTION OF AN OIL-SOLUBLE SILICONE, SAID SILICONE BEING PRESENT IN AN AMOUNT OF ABOUT 0.1 TO ABOUT 10% BY WEIGHT OF SAID LUBRICATING OIL.
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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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |