US3142582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating polyester polymer materials to improve their adhesion characteristics
Assignee: International Business Machines Corp
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Filing: 1961-11-17
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Granted: 1964-07-28
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Herman Koretzky
- 👤 Bernard Leland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:48
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; C23C18/24; H01B; H01B1/00; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PROCESS FOR IMPARTING RECEPTIVITY FOR METAL AND METAL IONS TO AT LEAST ONE SURFACE OF A POLY (ETHYLENE TEREPHTHALATE) PRODUCT BY THE STEPS OF: CONTACTING SAID SURFACE WITH AN ACID SOLUTION MAINTAINED AT A TEMPERATURE IN THE RANGE BETWEEN 70*C. TO 95*C., SAID ACID SOLUTION BEING FORMED BY REACTING FROM ABOUT 0.31 TO 0.57 MOL PERCENT SODIUM DICHROMATE, ABOUT 33.4 TO 53.8 MOL PERCENT SULFURIC ACID AND THE BALANCE WATER; RINSING SAID TREATED SURFACE IN WATER; AND CONTACTING SAID RINSED SURFACE WITH AN AQUEOUS METAL HYDROXIDE SOLUTION MAINTAINED AT A TEMPERATURE OF AT LEAST 80*C. HAVING A HYDROXIDE CONCENTRATION OF AT LEAST 2.49 MOLS PER LITER.
Claim 2
Dependent Claim
108 words
IN A PROCESS FOR IMPARTING RECEPTIVITY FOR METAL AND METAL IONS TO AT LEAST ONE SURFACE OF A POLY (ETHYLENE TEREPHTHALATE) PRODUCT BY THE STEPS OF: CONTACTING SAID SURFACE WITH AN ACID SOLUTION MAINTAINED AT A TEMPERATURE IN THE RANGE BETWEEN 70*C. TO 95*C., SAID ACID SOLUTION BEING FORMED BY REACTING FROM ABOUT 0.31 TO 0.57 MOL PERCENT SODIUM DICHROMATE, ABOUT 33.4 TO 53.8 MOL PERCENT SULFURIC ACID AND THE BALANCE WATER; RINSING SAID TREATED SURFACE IN WATER; AND CONTACTING SAID RINSED SURFACE WITH AN AQUEOUS METAL HYDROXIDE SOLUTION MAINTAINED AT A TEMPERATURE OF AT LEAST 80*C. HAVING A HYDROXIDE CONCENTRATION OF AT LEAST 2.49 MOLS PER LITER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |