Patent EP0138504A2 successfully refreshed from Google Patents.
Patent US3799797A successfully refreshed from Google Patents.
US3799797A
Expired / Lapsed
US
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Process for imparting scale resistance to a surface
Assignee: Texaco Inc
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Filing: 1971-12-27
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Granted: 1974-03-26
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Expires: 1991-12-27
Abstract
Abstract NOVEL EPOXY RESINS MODIFIED WITH POLYISOCYANATES AND PENDANT POLYETHER CHAINS PROVIDE AN EXCELLENT SCALERESISTANT SURFACE WHEN APPLIED AS A COATING AND EXPOSED TO MINERALIZED WATER PRONE TO DEPOSIT SCALE ON SURFACES.
Inventors
- 👤 J Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/283; B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C08G18/40; C08G18/58; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028; C08K; C08K5/00; C08K5/16; C08K5/29; C08L; C08L63/00; C08L71/00; C08L71/02; C09; C09D; C09D163/00; B05D5/00; B05D7/50; B05D7/52; B05D7/54; B05D7/546
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |