US2560916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement for laminating sheets of paper or like materials
Assignee: WESTFIELD RIVER PAPER Co
•
Filing: 1945-09-08
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Granted: 1951-07-17
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Expires: 1965-09-08
Abstract
No abstract record available.
Inventors
- 👤 Philip S Barnhart
- 👤 John C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A LAMINATING CEMENT COMPRISING POLYISOBUTYLENE OF A MOLECULAR WEIGHT IN THE RANGE OF BETWEEN 75,000 AND 200,000, A MICROCRYSTALLINE WAX OF A MELTING POINT OF ABOVE 150* F., A RESIN COMPATIBLE WITH MICROCRYSTALLINE WAX SELECTED FROM THE GROUP CONSISTING OF ROSIN, POLYMERIZED ROSIN, HYDROGENATED ROSIN AND THE ETHYLENE GLYCOL ESTERS OF ROSIN, AND A PLASTICIZER, IN WHICH THE POLYISOBUTYLENE IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 2%, THE RESIN IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 23%, THE PLASTICIZER IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 3% AND THE REMAINDER IS MICROCRYSTALLINE WAX.
Claim 2
Dependent Claim
93 words
A LAMINATING CEMENT COMPRISING POLYISOBUTYLENE OF A MOLECULAR WEIGHT IN THE RANGE OF BETWEEN 75,000 AND 200,000, A MICROCRYSTALLINE WAX OF A MELTING POINT OF ABOVE 150* F., A RESIN COMPATIBLE WITH MICROCRYSTALLINE WAX SELECTED FROM THE GROUP CONSISTING OF ROSIN, POLYMERIZED ROSIN, HYDROGENATED ROSIN AND THE ETHYLENE GLYCOL ESTERS OF ROSIN, AND A PLASTICIZER, IN WHICH THE POLYISOBUTYLENE IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 2%, THE RESIN IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 23%, THE PLASTICIZER IS PRESENT IN THE AMOUNT OF SUBSTANTIALLY 3% AND THE REMAINDER IS MICROCRYSTALLINE WAX.
References Cited (Backward Citations)
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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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |