US2819173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibers and the like
Assignee: Evonik Operations GmbH
•
Filing: 1953-10-19
•
Granted: 1958-01-07
•
Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Dithmar Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PROCESS FOR THE PRODUCTION OF SHAPED SYNTHETIC PRODUCTS OF THE NATURE OF FIBERS, FOILS, FILMS AND BANDS FROM SPINNING MASSES, THE STEPS WHICH COMPRISE INCORPORATING A FINELY DIVIDED OXIDE AEROGEL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINUM OXIDE, ZIRCONIUM OXIDE AND TITANIUM OXIDE AEROGELS OBTAINED BY A VAPOR PHASE THERMAL DECOMPOSITION OF A CHLORIDE SELECTED FROM THE GROUP CONSISTING OF SILICON, ALUMINUM, ZIRCONIUM AND TITANIUM CHLORIDES BY SUPPLYING SUCH CHLORIDE IN THE VAPOR STATE TO A DECOMPOSITION ZONE HEATED DIRECTLY TO AN ELEVATED TEMPERATURE BY THE COMBUSTION OF A HYDROGEN CONTAINING COMBUSTIBLE GAS TO FORM AN OXIDE AEROSOL WHICH IS RECOVERED AS THE AEROGEL IN SUCH SPINNING MASSES AND SPINNING SUCH OXIDE AEROGEL CONTAINING SPINNING MASSES TO FORM A SHAPED PRODUCT.
Claim 2
Dependent Claim
124 words
IN A PROCESS FOR THE PRODUCTION OF SHAPED SYNTHETIC PRODUCTS OF THE NATURE OF FIBERS, FOILS, FILMS AND BANDS FROM SPINNING MASSES, THE STEPS WHICH COMPRISE INCORPORATING A FINELY DIVIDED OXIDE AEROGEL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINUM OXIDE, ZIRCONIUM OXIDE AND TITANIUM OXIDE AEROGELS OBTAINED BY A VAPOR PHASE THERMAL DECOMPOSITION OF A CHLORIDE SELECTED FROM THE GROUP CONSISTING OF SILICON, ALUMINUM, ZIRCONIUM AND TITANIUM CHLORIDES BY SUPPLYING SUCH CHLORIDE IN THE VAPOR STATE TO A DECOMPOSITION ZONE HEATED DIRECTLY TO AN ELEVATED TEMPERATURE BY THE COMBUSTION OF A HYDROGEN CONTAINING COMBUSTIBLE GAS TO FORM AN OXIDE AEROSOL WHICH IS RECOVERED AS THE AEROGEL IN SUCH SPINNING MASSES AND SPINNING SUCH OXIDE AEROGEL CONTAINING SPINNING MASSES TO FORM A SHAPED PRODUCT.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |