Patent US2499134A successfully refreshed from Google Patents.
US2499134A
Expired / Lapsed
US
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Method of providing adhesion between surfaces
Assignee: Rohm and Haas Co
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Filing: 1944-11-29
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Granted: 1950-02-28
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Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 Bruyne Norman Adrian De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/06; B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/48; B29C65/4805; B29C65/483; B29C65/4835; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; Y; Y10; Y10S; Y10S238/00; Y10S238/01; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR UNITING TWO SURFACE WHICH COMPRISES COATING THE SURFACES WITH AN AQUEOUS SOLUTION OF A HEAT-REACTIVE PHENOL-ALDEHYDE CONDENSATE, APPLYING TO AT LEAST ONE OF SAID COATED SURFACES, WHILE SAID PHENOLIC CONDESATE IS STILL TACKY, A LAYER OF A POLYVINYL ACETAL RESIN IN COMMINUTED FORM, BRINGING THE COATED SURFACES TOGETHER TO FORM AN ASSEMBLY, AND HEATING AND SIMULTANEOUSLY PRESSING SAID ASSEMBLY AT A TEMPERATURE ABOVE 200*F. UNTIL SAID PHENOLIC CONDENSATE IS CONVERTED TO THE INFUSIBLE STAGE.
Claim 2
Dependent Claim
77 words
A PROCESS FOR UNITING TWO SURFACE WHICH COMPRISES COATING THE SURFACES WITH AN AQUEOUS SOLUTION OF A HEAT-REACTIVE PHENOL-ALDEHYDE CONDENSATE, APPLYING TO AT LEAST ONE OF SAID COATED SURFACES, WHILE SAID PHENOLIC CONDESATE IS STILL TACKY, A LAYER OF A POLYVINYL ACETAL RESIN IN COMMINUTED FORM, BRINGING THE COATED SURFACES TOGETHER TO FORM AN ASSEMBLY, AND HEATING AND SIMULTANEOUSLY PRESSING SAID ASSEMBLY AT A TEMPERATURE ABOVE 200*F. UNTIL SAID PHENOLIC CONDENSATE IS CONVERTED TO THE INFUSIBLE STAGE.
References Cited (Backward Citations)
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Cited
US1867575A
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US1978807A
Cited
US2261983A
Cited
US2397231A
Cited
US2403077A
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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) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |