← Back to Patent Explorer
US2709078A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for production of refractory metals

Assignee: NL Industries Inc
•
Filing: 1952-07-23
•
Granted: 1955-05-24
•
Expires: 1972-07-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Carl K Stoddard
  • 👤 James L Wyatt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 11:20
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1268; C22B34/1272; F; F27; F27B; F27B17/00; Y; Y10; Y10S; Y10S266/00; Y10S266/905

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 134 words
IN AN APPARATUS FOR PRODUCING A REFRACTORY METAL BY REACTING A TETRACHLORIDE OF A REFRACTORY METAL WITH A REACTANT METAL IN AN OXYGEN FREE ATMOSPHERE: A SECTIONAL AIR-TIGHT REACTION UNIT COMPRISING AN INVERTED CAN-SHAPED REACTOR SHELL; A CAN-SHAPED CONDENSING SHELL ARRANGED WITH ITS OPEN END OPPOSITE THE OPEN END OF SAID REACTOR SHELL; FASTENING MEANS CONSTRUCTED AND ARRANGED TO DETACHABLY FASTEN TOGETHER THE OPPOSED OPEN ENDS OF SAID REACTOR SHELL AND SAID CONDENSING SHELL; REINFORCING MEANS FOR SAID REACTOR SHELL COMPRISING A PLURALITY OF STIFF METAL RIBS SECURED TO THE INNER WALL THEREOF; A REACTION POT IN SAID REINFORCED REACTOR SHELL; AND POT SUPPORTING MEANS CONSTRUCTED AND ARRANGED TO BE MOUNTED IN THE OPEN END OF SAID CONDENSING SHELL AND SUPPORTED BY THE LOWER SHELL, AND TO SUPPORT SAID POT WITHIN SAID REACTOR SHELL.

References Cited (Backward Citations)

US2076067A Cited
US2205854A Cited
US2370812A Cited
US2429668A Cited
US2458253A Cited
US2482127A Cited
US2556763A Cited
US2564337A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1958-05-23 1958-11-22 1959-05-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1962-05-23 1962-11-22 1963-05-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1966-05-23 1966-11-22 1967-05-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag