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:
Jul. 06, 1982
Filed:
Jan. 02, 1981
Bernd Melchior, Remscheid, DE;
Imchemie Kunststoff GmbH, Wermelskirchen, DE;
Abstract
A method of treating a porous body to increase its strength and resistance to weathering that includes first removing gases and moisture from the porous body by applying a vacuum to a vessel containing the body, then filling the vessel with an impregnating liquid consisting of a hardenable (cureable) resin and hardner so that the body is completely immersed while the vacuum is being applied, then applying a positive pressure to the impregnating liquid in which the body is immersed until the impregnating liquid has penetrated into the porous body the desired amount, then draining the impregnating liquid from the vessel while maintaining the positive pressure and then initiating the hardening of the hardenable liquid while maintaining the positive pressure, part of the impregnating liquid on the surface of the body being removed prior to hardening of the impregnating liquid in the body.