JPS57141469A - Pencil lead - Google Patents

Pencil lead

Info

Publication number
JPS57141469A
JPS57141469A JP2642381A JP2642381A JPS57141469A JP S57141469 A JPS57141469 A JP S57141469A JP 2642381 A JP2642381 A JP 2642381A JP 2642381 A JP2642381 A JP 2642381A JP S57141469 A JPS57141469 A JP S57141469A
Authority
JP
Japan
Prior art keywords
lead
dinitronaphthalene
thermoplastic resin
binder
pencil lead
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.)
Granted
Application number
JP2642381A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0128071B2 (enExample
Inventor
Masatoshi Abe
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.)
TONBO ENPITSU KK
Original Assignee
TONBO ENPITSU KK
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 TONBO ENPITSU KK filed Critical TONBO ENPITSU KK
Priority to JP2642381A priority Critical patent/JPS57141469A/ja
Publication of JPS57141469A publication Critical patent/JPS57141469A/ja
Publication of JPH0128071B2 publication Critical patent/JPH0128071B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)
JP2642381A 1981-02-25 1981-02-25 Pencil lead Granted JPS57141469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2642381A JPS57141469A (en) 1981-02-25 1981-02-25 Pencil lead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2642381A JPS57141469A (en) 1981-02-25 1981-02-25 Pencil lead

Publications (2)

Publication Number Publication Date
JPS57141469A true JPS57141469A (en) 1982-09-01
JPH0128071B2 JPH0128071B2 (enExample) 1989-05-31

Family

ID=12193108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2642381A Granted JPS57141469A (en) 1981-02-25 1981-02-25 Pencil lead

Country Status (1)

Country Link
JP (1) JPS57141469A (enExample)

Also Published As

Publication number Publication date
JPH0128071B2 (enExample) 1989-05-31

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