US3262983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature reactions
Assignee: Dow Chemical Co
•
Filing: 1963-05-08
•
Granted: 1966-07-26
•
Expires: 1983-05-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Ladd
- 👤 Frederick J Soderquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01J19/0026; C07; C07C; C07C2/00; C07C2/76; C07C4/00; C07C4/08; C07C4/10; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A METHOD OF PERFORMING HIGH TEMPERATURE REACTIONS WHEREIN HYDROCARBON VAPORS ARE SUBJECTED TO TEMPERATURES ABOVE 500 DEGREES CENTIGRADE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN A REACTOR HAVING A REACTION CONTACTING SURFACE OF A STEEL CONTAINING FROM ABOUT 11 TO ABOUT 30 PERCENT CHROMIUM AND A MAXIMUM OF ABOUT 1.5 PERCENT NICKEL, SUCH STEEL BEING METALLURGICALLY BONDED TO A SUPPORTING SECOND STEEL WHICH HAS GOOD STRENGTH AT TEMPERATURES ABOVE ABOUT 550 DEGREES CENTIGRADE.
Claim 2
Dependent Claim
76 words
IN A METHOD OF PERFORMING HIGH TEMPERATURE REACTIONS WHEREIN HYDROCARBON VAPORS ARE SUBJECTED TO TEMPERATURES ABOVE 500 DEGREES CENTIGRADE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN A REACTOR HAVING A REACTION CONTACTING SURFACE OF A STEEL CONTAINING FROM ABOUT 11 TO ABOUT 30 PERCENT CHROMIUM AND A MAXIMUM OF ABOUT 1.5 PERCENT NICKEL, SUCH STEEL BEING METALLURGICALLY BONDED TO A SUPPORTING SECOND STEEL WHICH HAS GOOD STRENGTH AT TEMPERATURES ABOVE ABOUT 550 DEGREES CENTIGRADE.
References Cited (Backward Citations)
US1938609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |