Patent US3067134A successfully refreshed from Google Patents.
US3067134A
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Inhibition of deposition of hydrocarbonaceous solids from oil
Assignee: Dow Chemical Co
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Filing: 1960-04-28
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Granted: 1962-12-04
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Christ F Parks
- 👤 Jacob E Strassner
- 👤 Fred W Burtch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/927; Y10S507/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF INHIBITING THE ADHESION OF SOLID HYDROCARBONACEOUS MATERIAL DEPOSITED FROM OIL CONTAINING SUCH SUBSTANCES IN SOLUTION AND SUSPENSION ON A DEPOSITIONSUSCEPTIBLE SURFACE OF EQUIPMENT WITH WHICH SUCH OIL COMES IN CONTACT CONSISTING OF SUBJECTING THE SURFACES THUS CONTACTED TO THE ACTION ON AN ALKALINE AQUEOUS DISPERSION OF A SMALL BUT EFFECTIVE AMOUNTS OF QUEBRACHO.
Claim 2
Independent Claim
56 words
THE METHOD OF INHIBITING THE ADHESION OF SOLID HYDROCARBONACEOUS MATERIAL DEPOSITED FROM OIL CONTAINING SUCH SUBSTANCES IN SOLUTION AND SUSPENSION ON A DEPOSITIONSUSCEPTIBLE SURFACE OF EQUIPMENT WITH WHICH SUCH OIL COMES IN CONTACT CONSISTING OF SUBJECTING THE SURFACES THUS CONTACTED TO THE ACTION ON AN ALKALINE AQUEOUS DISPERSION OF A SMALL BUT EFFECTIVE AMOUNTS OF QUEBRACHO.
References Cited (Backward Citations)
US1892205A
Cited
US1873083A
Cited
US2560930A
Cited
US2771420A
Cited
US2828258A
Cited
US2927078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |