Patent US3275552A successfully refreshed from Google Patents.
US3275552A
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Well treating composition and method
Assignee: Milchem Inc
•
Filing: 1963-04-23
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Granted: 1966-09-27
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Curtis R Kern
- 👤 Herbert L Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:36
CPC Classifications
C; C11; C11D; C11D1/00; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/904; Y10S507/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD OF PREPARING A SOLID, WATER-SOLUBLE SURFACRE-ACTIVE COMPOSITION FOR USE IN WELLS, COMPRISING THE STEPS OF MELTING CRYSTALLINE SORBITOL IN THE PRESENCE OF MOLAL QUANTITIES OF (1) AN AMINE CONSISTING OF A MEMBER SELECTED FROM THE GROUP CHARACTERIZED BY THE GENERALIZED FORMULAS
Claim 2
Independent Claim
43 words
A METHOD OF PREPARING A SOLID, WATER-SOLUBLE SURFACRE-ACTIVE COMPOSITION FOR USE IN WELLS, COMPRISING THE STEPS OF MELTING CRYSTALLINE SORBITOL IN THE PRESENCE OF MOLAL QUANTITIES OF (1) AN AMINE CONSISTING OF A MEMBER SELECTED FROM THE GROUP CHARACTERIZED BY THE GENERALIZED FORMULAS
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |