JPS6221387B2 - - Google Patents

Info

Publication number
JPS6221387B2
JPS6221387B2 JP55057321A JP5732180A JPS6221387B2 JP S6221387 B2 JPS6221387 B2 JP S6221387B2 JP 55057321 A JP55057321 A JP 55057321A JP 5732180 A JP5732180 A JP 5732180A JP S6221387 B2 JPS6221387 B2 JP S6221387B2
Authority
JP
Japan
Prior art keywords
phthalein
water
added
hour
coloring material
Prior art date
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.)
Expired
Application number
JP55057321A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56152879A (en
Inventor
Ikuo Takagishi
Denkichi Sasage
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentel Co Ltd
Original Assignee
Pentel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pentel Co Ltd filed Critical Pentel Co Ltd
Priority to JP5732180A priority Critical patent/JPS56152879A/ja
Publication of JPS56152879A publication Critical patent/JPS56152879A/ja
Publication of JPS6221387B2 publication Critical patent/JPS6221387B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)
JP5732180A 1980-04-30 1980-04-30 Color-disappearing and color-developing colorant Granted JPS56152879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5732180A JPS56152879A (en) 1980-04-30 1980-04-30 Color-disappearing and color-developing colorant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5732180A JPS56152879A (en) 1980-04-30 1980-04-30 Color-disappearing and color-developing colorant

Publications (2)

Publication Number Publication Date
JPS56152879A JPS56152879A (en) 1981-11-26
JPS6221387B2 true JPS6221387B2 (en]) 1987-05-12

Family

ID=13052305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5732180A Granted JPS56152879A (en) 1980-04-30 1980-04-30 Color-disappearing and color-developing colorant

Country Status (1)

Country Link
JP (1) JPS56152879A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63148375U (en]) * 1987-03-21 1988-09-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63148375U (en]) * 1987-03-21 1988-09-29

Also Published As

Publication number Publication date
JPS56152879A (en) 1981-11-26

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