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:
Sep. 28, 2004
Filed:
Mar. 05, 2002
Shigeki Endo, Kodaira, JP;
Howard See, Kodaira, JP;
Tasuku Saito, Kodaira, JP;
Koji Sakata, Chuo-ku, JP;
Kenji Fukuda, Kitakyushu, JP;
Youichiro Hara, Kitakyushu, JP;
Tatsuo Umeno, Kitakyushu, JP;
Other;
Abstract
The present invention can provide particles for electro-rheological fluid for providing a high electro-rheological effect over a wide temperature range at low electric power consumption, and having high strength and excellent durability, not being susceptible to break-up due to the load of stress. Particles for an electro-rheological fluid of the present invention comprise spherical carbonaceous particles, obtained substantially from a solvent and a condensation product of a methylene type bond of aromatic sulfonic acid or a salt thereof.