Patent US4186999A successfully refreshed from Google Patents.
US3369920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing coatings on carbon and graphite filaments
Assignee: Union Carbide Corp
•
Filing: 1964-11-24
•
Granted: 1968-02-20
•
Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Romeo G Bourdeau
- 👤 Frank E Papalegis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:45
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/126; C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B41/00; C04B41/009; C04B41/45; C04B41/4584; C04B41/80; C04B41/81; C23; C23C; C23C16/00; C23C16/22; D01F11/124; D01F11/125; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR DEPOSITING PYROLYTIC COATINGS ON CARBON AND GRAPHITE FILAMENTS, WHICH COMPRISES DEPOSITING SAID COATINGS AT A TEMPERATURE BETWEEN ABOUT 1300*C. AND 2100*C. AND AT A PRESSURE OF LESS THAN 100 MM. OF MERCURY, USING ABOUT 10 TO 400 PARTS BY VOLUME OF A DILUENT GAS TO 1 PART BY VOLUME OF A SOURCE GAS, SAID SOURCE GAS COMPRISING AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND HALIDES OF TANTALUM, ZIRCONIUM, NIOBIUM, HAFNIUM, TITANIUM, TUNGSTEN, SILICON, AND BORON.
Claim 2
Dependent Claim
83 words
A PROCESS FOR DEPOSITING PYROLYTIC COATINGS ON CARBON AND GRAPHITE FILAMENTS, WHICH COMPRISES DEPOSITING SAID COATINGS AT A TEMPERATURE BETWEEN ABOUT 1300*C. AND 2100*C. AND AT A PRESSURE OF LESS THAN 100 MM. OF MERCURY, USING ABOUT 10 TO 400 PARTS BY VOLUME OF A DILUENT GAS TO 1 PART BY VOLUME OF A SOURCE GAS, SAID SOURCE GAS COMPRISING AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND HALIDES OF TANTALUM, ZIRCONIUM, NIOBIUM, HAFNIUM, TITANIUM, TUNGSTEN, SILICON, AND BORON.
References Cited (Backward Citations)
US3172774A
Cited
US1987576A
Cited
US2853969A
Cited
US2810664A
Cited
US2778743A
Cited
US3151852A
Cited
US3077385A
Cited
US3167449A
Cited
US3120450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |