The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1986
Filed:
Dec. 20, 1983
Robert D MacInnes, West Redding, CT (US);
Carlos C Periu, Boca Raton, FL (US);
Robert L Rohr, Scarsdale, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An improved apparatus and method are disclosed for heating objects, such as electronic chips being bonded to substrates, in which a copper heat exchanger element (12) comprises a circuitous interior passage (26) through which gases pass from a source (30) to be heated by a heater (74) to a desired temperature and to be cleansed of unwanted oxygen by catalytic reaction, prior to entering a furnace chamber (22) heated from below by the heat exchanger element (12) and from above by a further heater (72) and copper plate (60), whereby essentially uniform gas temperature, acceptably low oxygen concentration and fast cycling times are provided in the furnace chamber (22). See FIG. 1.