US3231440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laminating glass
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1958-07-17
•
Granted: 1966-01-25
•
Expires: 1978-07-17
Abstract
No abstract record available.
Inventors
- 👤 Paul T Mattimoe
- 👤 William L Elton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:38
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF BONDING A LAYER OF POLYVINYL BUTYRAL A SUBSTANTIALLY SOLID MEMBER, INCLUDING APPLYING A COATING CONSISTING OF A SOLVENT PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND MIXED ALKYL-ARYL ESTERS OF ORTHO PHOSPHORIC ACID HAVING A VAPOR PRESSURE LOWER THAN 5 MILIMETERS OF MERCURY AT 200*C. AND A SOLUBILITY IN WATER OF LESS THAN .01 PERCENT BY WEIGHT TO AT LEAST ONE OF THE OPPOSED SURFACES OF SAID MEMBER AND SAID POLYVINYL BUTYRAL LAYER, AND WHILE THE SAID MEMBER IS AT A TEMPERATURE WITHIN THE RANGE OF APPROXIMATELY 150*F. TO 300*F., SUBJECTING THE COATING BETWEEN THE SURFACES OF SAID MEMBER AND SAID LAYER OF POLYVINYL BUTYRAL TO A PRESSURE SUFFICIENT ONLY TO REMOVE AIR BUBBLES FROM SAID COATING TO BOND THE SAID MEMBER AND LAYER OF POLYVINYL BUTYRAL TOGETHER.
Claim 2
Independent Claim
133 words
A METHOD OF BONDING A LAYER OF POLYVINYL BUTYRAL A SUBSTANTIALLY SOLID MEMBER, INCLUDING APPLYING A COATING CONSISTING OF A SOLVENT PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND MIXED ALKYL-ARYL ESTERS OF ORTHO PHOSPHORIC ACID HAVING A VAPOR PRESSURE LOWER THAN 5 MILIMETERS OF MERCURY AT 200*C. AND A SOLUBILITY IN WATER OF LESS THAN .01 PERCENT BY WEIGHT TO AT LEAST ONE OF THE OPPOSED SURFACES OF SAID MEMBER AND SAID POLYVINYL BUTYRAL LAYER, AND WHILE THE SAID MEMBER IS AT A TEMPERATURE WITHIN THE RANGE OF APPROXIMATELY 150*F. TO 300*F., SUBJECTING THE COATING BETWEEN THE SURFACES OF SAID MEMBER AND SAID LAYER OF POLYVINYL BUTYRAL TO A PRESSURE SUFFICIENT ONLY TO REMOVE AIR BUBBLES FROM SAID COATING TO BOND THE SAID MEMBER AND LAYER OF POLYVINYL BUTYRAL TOGETHER.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |