JPS54148623A - Pencil lead and making method thereof - Google Patents

Pencil lead and making method thereof

Info

Publication number
JPS54148623A
JPS54148623A JP5622878A JP5622878A JPS54148623A JP S54148623 A JPS54148623 A JP S54148623A JP 5622878 A JP5622878 A JP 5622878A JP 5622878 A JP5622878 A JP 5622878A JP S54148623 A JPS54148623 A JP S54148623A
Authority
JP
Japan
Prior art keywords
making method
pencil lead
pencil
lead
making
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
JP5622878A
Other languages
Japanese (ja)
Other versions
JPS621985B2 (en
Inventor
Katsuya Miyata
Naonuno Ueda
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 JP5622878A priority Critical patent/JPS54148623A/en
Publication of JPS54148623A publication Critical patent/JPS54148623A/en
Publication of JPS621985B2 publication Critical patent/JPS621985B2/ja
Granted legal-status Critical Current

Links

JP5622878A 1978-05-12 1978-05-12 Pencil lead and making method thereof Granted JPS54148623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5622878A JPS54148623A (en) 1978-05-12 1978-05-12 Pencil lead and making method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5622878A JPS54148623A (en) 1978-05-12 1978-05-12 Pencil lead and making method thereof

Publications (2)

Publication Number Publication Date
JPS54148623A true JPS54148623A (en) 1979-11-21
JPS621985B2 JPS621985B2 (en) 1987-01-17

Family

ID=13021237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5622878A Granted JPS54148623A (en) 1978-05-12 1978-05-12 Pencil lead and making method thereof

Country Status (1)

Country Link
JP (1) JPS54148623A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887166A (en) * 1981-11-18 1983-05-24 Pilot Precision Co Ltd Preparation of pencil lead
JPS58113274A (en) * 1981-12-26 1983-07-06 Pilot Precision Co Ltd Production of pencil lead

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01294097A (en) * 1988-05-23 1989-11-28 Matsushita Electric Ind Co Ltd Filing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887166A (en) * 1981-11-18 1983-05-24 Pilot Precision Co Ltd Preparation of pencil lead
JPH0252662B2 (en) * 1981-11-18 1990-11-14 Pilot Precision
JPS58113274A (en) * 1981-12-26 1983-07-06 Pilot Precision Co Ltd Production of pencil lead
JPH0252663B2 (en) * 1981-12-26 1990-11-14 Pilot Precision

Also Published As

Publication number Publication date
JPS621985B2 (en) 1987-01-17

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