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. 26, 2020
Filed:
Jan. 12, 2018
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Shinjiro Kasahara, Nagoya, JP;
Takenori Sawamura, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A method of producing an article with a foamed surface which includes: a step 1 of forming small pores in a surface of a base made of a plastic to produce a base with small pores; a step 2 of immersing the base with small pores, obtained in step 1, in a solution including a foaming agent to prepare a foaming agent-including base; a step 3 of immersing the foaming agent-including base, obtained in step 2, in a foaming solution that makes the plastic swell and the foaming agent foam to prepare a foamed base; and a step 4 of immersing the foamed base, obtained in step 3, in a coagulating solution that coagulates the swollen plastic.