US3753660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for tube reactors
Assignee: Dynamit Nobel AG
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Filing: 1970-11-20
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Granted: 1973-08-21
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Expires: 1990-11-20
Abstract
Abstract In a tubular reactor carrying a bed of solid material into which carbon electrodes project for heating the material upon passage of a current, the outside ends of said electrodes being connected to metallic conductors in turn connected to a supply of current, the invention involves pouring lead about the end of each electrode to effect improved contact between the electrode and its respective metallic conductor. The process involving use of such electrodes to react carbon with chlorine and the oxide of silicon or metals such as vanadium, titanium or zirconium is also covered.
Inventors
- 👤 F Langenhoff
- 👤 E Termin
- 👤 O Bleh
- 👤 R Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:39
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/04; C01G31/00; C01G31/04; C22; C22B; C22B1/00; C22B1/02; C22B1/08; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1222; B; B01; B01J; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00389; B01J2208/00415; B01J2208/00433; B01J2208/00477; B01J2208/00495; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A reactor according to claim 1, wherein the end of each electrode extending into said bed is asymmetrical relative to the electrode axis, whereby upon rotation of an electrode about its axis the distance from said end to the corresponding end of another electrode may be varied.
Claim 2
Dependent Claim
15 words
A reactor according to claim 1, wherein said tube is made of refractory chlorine-resistant material.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |