US2804378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of arsenic trisulfide
Assignee: American Optical Corp
•
Filing: 1953-10-05
•
Granted: 1957-08-27
•
Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 Lee O Upton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:13
CPC Classifications
C; C01; C01G; C01G28/00; C01G28/008; C03; C03C; C03C3/00; C03C3/32; C03C3/321
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
APPARATUS FOR MAKING GLASS COMPRISING A DISTILLING AND CONDENSING FURNACE EMBODYING A DISTILLATION CHAMBER HAVING AN ENTRANCE IN THE TOP PORTION THEREOF, A PLURALITY OF CONDENSING CHAMBERS EACH ALSO HAVING AN ENTRANCE IN THE TOP PORTION THEREOF, AND CONDUIT MEANS ADAPTED TO SELECTIVELY CONNECT AND DISTILLATION CHAMBER WITH SAID CONDENSING CHAMBERS,SAID DISTILLATION CHAMBER BEING ADAPTED TO CARRY A SUPPLY OF THE METERIAL TO BE CONVERTED INTO THE DESIRED GLAS AND HAVING HEATING MEANS FOR RAISING THE TEMPERATURE THEREWITHIN SUFFICIENTLY TO VAPORIZE SAID METERIAL WHEREBY METERIAL IN VAPORIZED FROM WILL FLOW THROUGH THE CONDUIT TO A SELECTED CONDENSING CHAMBER, HEATING MEANS FOR EACH OF SAID CONDENSING CHAMBERS ADAPTED TO MAINTAIN A CONTROLLED TEMPERATURE THEREWITH SUCH THAT THE GLASS FORMING PORTIONS OF SAID VAPORIZED MATERIAL FROM SAID DISTIALLATION CHAMBER WILL CONDENSE AND FROM A LIQUID POOL IN THE RESPECTIVELY CONDENSING CHAMBER, MEANS CONNECTED WITH THE INTERIORS OF SAID DISTILLATION AND CONDENSING CHAMBERS FOR INTRODUCING A NON-OXIDIZING ATMOSPHERE THEREIN,AND EXHAUST MEANS FOR SAID CONDENSING CHAMBER THROUGH WHICCH THE NONCONDENSING UNDESIRED VOLATILE GASES MAY ESCAPE THEREFROM.
Claim 2
Dependent Claim
172 words
APPARATUS FOR MAKING GLASS COMPRISING A DISTILLING AND CONDENSING FURNACE EMBODYING A DISTILLATION CHAMBER HAVING AN ENTRANCE IN THE TOP PORTION THEREOF, A PLURALITY OF CONDENSING CHAMBERS EACH ALSO HAVING AN ENTRANCE IN THE TOP PORTION THEREOF, AND CONDUIT MEANS ADAPTED TO SELECTIVELY CONNECT AND DISTILLATION CHAMBER WITH SAID CONDENSING CHAMBERS,SAID DISTILLATION CHAMBER BEING ADAPTED TO CARRY A SUPPLY OF THE METERIAL TO BE CONVERTED INTO THE DESIRED GLAS AND HAVING HEATING MEANS FOR RAISING THE TEMPERATURE THEREWITHIN SUFFICIENTLY TO VAPORIZE SAID METERIAL WHEREBY METERIAL IN VAPORIZED FROM WILL FLOW THROUGH THE CONDUIT TO A SELECTED CONDENSING CHAMBER, HEATING MEANS FOR EACH OF SAID CONDENSING CHAMBERS ADAPTED TO MAINTAIN A CONTROLLED TEMPERATURE THEREWITH SUCH THAT THE GLASS FORMING PORTIONS OF SAID VAPORIZED MATERIAL FROM SAID DISTIALLATION CHAMBER WILL CONDENSE AND FROM A LIQUID POOL IN THE RESPECTIVELY CONDENSING CHAMBER, MEANS CONNECTED WITH THE INTERIORS OF SAID DISTILLATION AND CONDENSING CHAMBERS FOR INTRODUCING A NON-OXIDIZING ATMOSPHERE THEREIN,AND EXHAUST MEANS FOR SAID CONDENSING CHAMBER THROUGH WHICCH THE NONCONDENSING UNDESIRED VOLATILE GASES MAY ESCAPE THEREFROM.
References Cited (Backward Citations)
US1898039A
Cited
US1665406A
Cited
GB358863A
Cited
US1917725A
Cited
US2255549A
Cited
US2331524A
Cited
US2531143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |