Title:
封水蒸発防止剤
Document Type and Number:
Japanese Patent JP4658218
Kind Code:
B1
Inventors:
Shigeru Tanaka
Application Number:
JP2009265439A
Publication Date:
March 23, 2011
Filing Date:
November 20, 2009
Export Citation:
Assignee:
Shigeru Tanaka
International Classes:
E03F7/02
Domestic Patent References:
| JP2009127355A | ||||
| JP2004131548A | ||||
| JP2009052049A |
Foreign References:
| WO2010001595A1 |
Attorney, Agent or Firm:
Takeshi Nakatani