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:
May. 16, 1989
Filed:
Apr. 29, 1986
Toshio Ohara, Kariya, JP;
Toshio Takahashi, Oubu, JP;
Masayoshi Nishikawa, Kariya, JP;
Tutomu Niwa, Chiryu, JP;
Takao Ogino, Yokohama, JP;
Ryosuke Sako, Ichikawa, JP;
Hideaki Kaneko, Tokyo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Abstract
A heat exchanger has special usage such as an evaporator of an automotive air conditioner. This heat exchanger can improve wettability and can reduce a scattering of condensed water. This heat exchanger is treated by a special chemical conversion treatment so that this heat exchanger has two layers of coating on the surface thereof. One of the two layers is a chemical conversion coating formed on the surface of the heat exchanger. The other one is a resin coating formed over the chemical conversion coating. The chemical conversion coating is treated by immersing the heat exchanger into a water solution. The resin coating is also treated by immersing the heat exchanger having the chemical conversion coating into a water solution of organic high polymer material.