US2637649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensing zinc vapor
Assignee: New Jersey Zinc Co
•
Filing: 1949-09-02
•
Granted: 1953-05-05
•
Expires: 1969-09-02
Abstract
No abstract record available.
Inventors
- 👤 Erwin C Handwerk
- 👤 George T Mahler
- 👤 Llewellyn J Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
C; C22; C22B; C22B19/00; C22B19/04; C22B19/16; C22B19/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE PRODUCTION OF METALLIC ZINC VAPOR WHEREIN A HOT GASEOUS PRODUCT IS PRODUCED CONTAINING THE ZINC VAPOR IN ADMIXTURE WITH A DILUENT GAS INCLUDING AN OXIDIZING CONSTITUENT AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 800* TO 1300* C., THE IMPROVEMENT WHICH COMPRISES PREVENTING OXIDATION OF THE ZINC VAPOR BY SAID OXIDIZING CONSTITUENT WITHIN SAID TEMPERATURE RANGE BY INTRODUCING INTO THE HOT GASEOUS PRODUCT AN AMOUNT OF A CRACKABLE HYDROCARBON SUFFICIENT TO PRODUCE BY ITS CRACKING IN SITU THEREIN A FLOATING CLOUD OF INCANDESCENT NASCENT CARBON PARTICLES BUT INSUFFICIENT TO LOWER THE TEMPERATURE OF SAID HOT GASEOUS PRODUCT BELOW 800* C., AND CONDENSING THE RESULTING ZINC VAPOR TO MOLTEN MASSIVE ZINC METAL.
Claim 2
Dependent Claim
113 words
IN THE PRODUCTION OF METALLIC ZINC VAPOR WHEREIN A HOT GASEOUS PRODUCT IS PRODUCED CONTAINING THE ZINC VAPOR IN ADMIXTURE WITH A DILUENT GAS INCLUDING AN OXIDIZING CONSTITUENT AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 800* TO 1300* C., THE IMPROVEMENT WHICH COMPRISES PREVENTING OXIDATION OF THE ZINC VAPOR BY SAID OXIDIZING CONSTITUENT WITHIN SAID TEMPERATURE RANGE BY INTRODUCING INTO THE HOT GASEOUS PRODUCT AN AMOUNT OF A CRACKABLE HYDROCARBON SUFFICIENT TO PRODUCE BY ITS CRACKING IN SITU THEREIN A FLOATING CLOUD OF INCANDESCENT NASCENT CARBON PARTICLES BUT INSUFFICIENT TO LOWER THE TEMPERATURE OF SAID HOT GASEOUS PRODUCT BELOW 800* C., AND CONDENSING THE RESULTING ZINC VAPOR TO MOLTEN MASSIVE ZINC METAL.
References Cited (Backward Citations)
US766279A
Cited
US976557A
Cited
US1425661A
Cited
US1927763A
Cited
US1961425A
Cited
US2096779A
Cited
US2263751A
Cited
US2364742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |