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. 24, 2005
Filed:
Sep. 24, 2002
Ryouichi Yamamoto, Ichihara, JP;
Satoru Ohtani, Ichihara, JP;
Tomohiro Arase, Ichihara, JP;
Fumio Hattori, Ichihara, JP;
Yoshiaki Kikuchi, Ichihara, JP;
Hisayoshi Watanabe, Sodegaura, JP;
Jun Iwama, Sodegaura, JP;
Ryouichi Yamamoto, Ichihara, JP;
Satoru Ohtani, Ichihara, JP;
Tomohiro Arase, Ichihara, JP;
Fumio Hattori, Ichihara, JP;
Yoshiaki Kikuchi, Ichihara, JP;
Hisayoshi Watanabe, Sodegaura, JP;
Jun Iwama, Sodegaura, JP;
Mitsui Chemical, Inc., Tokyo, JP;
Abstract
In a gas phase olefin polymerization process using a fluidized bed vessel, an apparatus is employed having a device for measuring temperature or temperature distribution on the external wall surface of the vessel and a controlling means which predicts the progressive state of reaction inside the vessel, calculates the difference between the measured value and a target value determined beforehand and modifies polymerization conditions in relation thereto.