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:
Jun. 07, 1983
Filed:
Nov. 04, 1980
Applicant:
Inventors:
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427244 ; 4273935 ; 4274301 ;
Abstract
A method of producing a material for absorbing ultra-high frequency waves from a starting porous material having closed cells includes the steps of immersing the porous material into a fluid having a liquid component, suspended carbon, and a dissolved polymerizable binder, applying sufficient pressure to the fluid to open the closed cells of the porous material, allowing the fluid to disperse into the opened cells, removing the porous material from the fluid, drying the porous material to remove the liquid component, and closing the cells by polymerizing the binder.