US3207687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thermosetting resinous material
Assignee: 3M Co
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Filing: 1963-09-25
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Granted: 1965-09-21
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 John E Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/023; C08; C08G; C08G79/00; C08G79/02; C08G79/04; C08L; C08L61/00; C08L61/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PREPARING A NORMALLY SOLID, PARTIALLYCURED, THERMOSETTING, HYDROCARBONACEOUS RESINOUS MATERIAL HAVING A SOFTENING POINT OF 140 TO 250*C. AND CONTAINING 25 TO 60% OF BENZENE-SOLUBLE COMPONENTS WHICH COMPRISES MIXING A NON-ASPHALTIC, PREDOMINANTLY POLYNUCLEAR AROMATIC-CONTAINING HYDROCARBON PITCH HAVING A DENSITY ABOVE 1.02 GRAMS PER CUBIC CENTIMETER AND BEING SELECTED FROM THE GROUP CONSISTING OF COAL TAR PITCHES, RESIDUES FROM THE AROMATIZATION OF PETROLEUM PRODUCTS AND RESIDUES FROM THE MANUFACTURE OF PHENOLS, WITH 10 TO 25 PERCENT PHOSPHORUS PENTOXIDE AND HEATING THE MIXTURE AT AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PREPARING A NORMALLY SOLID, PARTIALLYCURED, THERMOSETTING, HYDROCARBONACEOUS RESINOUS MATERIAL HAVING A SOFTENING POINT OF 140 TO 250*C. AND CONTAINING 25 TO 60% OF BENZENE-SOLUBLE COMPONENTS WHICH COMPRISES MIXING A NON-ASPHALTIC, PREDOMINANTLY POLYNUCLEAR AROMATIC-CONTAINING HYDROCARBON PITCH HAVING A DENSITY ABOVE 1.02 GRAMS PER CUBIC CENTIMETER AND BEING SELECTED FROM THE GROUP CONSISTING OF COAL TAR PITCHES, RESIDUES FROM THE AROMATIZATION OF PETROLEUM PRODUCTS AND RESIDUES FROM THE MANUFACTURE OF PHENOLS, WITH 10 TO 25 PERCENT PHOSPHORUS PENTOXIDE AND HEATING THE MIXTURE AT AN ELEVATED TEMPERATURE.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |