JPS4930821A - - Google Patents
Info
- Publication number
- JPS4930821A JPS4930821A JP6698872A JP6698872A JPS4930821A JP S4930821 A JPS4930821 A JP S4930821A JP 6698872 A JP6698872 A JP 6698872A JP 6698872 A JP6698872 A JP 6698872A JP S4930821 A JPS4930821 A JP S4930821A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transformer Cooling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6698872A JPS4930821A (ja) | 1972-07-04 | 1972-07-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6698872A JPS4930821A (ja) | 1972-07-04 | 1972-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4930821A true JPS4930821A (ja) | 1974-03-19 |
Family
ID=13331891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6698872A Pending JPS4930821A (ja) | 1972-07-04 | 1972-07-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS4930821A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55122787A (en) * | 1979-03-14 | 1980-09-20 | Mitsui Toatsu Chem Inc | Preparation of pyromellitic anhydride |
JPS568388A (en) * | 1979-07-04 | 1981-01-28 | Mitsui Toatsu Chem Inc | Preparation of pyromellitic anhydride |
JPH01294679A (ja) * | 1988-02-24 | 1989-11-28 | Kawasaki Steel Corp | 無水ピロメリット酸の製造方法およびこれに用いる触媒 |
US6699999B2 (en) | 2001-08-08 | 2004-03-02 | Nippon Shokubai Co., Ltd. | Process for producing pyromellitic anhydride |
-
1972
- 1972-07-04 JP JP6698872A patent/JPS4930821A/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55122787A (en) * | 1979-03-14 | 1980-09-20 | Mitsui Toatsu Chem Inc | Preparation of pyromellitic anhydride |
JPS568388A (en) * | 1979-07-04 | 1981-01-28 | Mitsui Toatsu Chem Inc | Preparation of pyromellitic anhydride |
JPH01294679A (ja) * | 1988-02-24 | 1989-11-28 | Kawasaki Steel Corp | 無水ピロメリット酸の製造方法およびこれに用いる触媒 |
US6699999B2 (en) | 2001-08-08 | 2004-03-02 | Nippon Shokubai Co., Ltd. | Process for producing pyromellitic anhydride |