IPC Main Group
B43L 7/00 Straightedges
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- Subclass:
- ARTICLES FOR WRITING OR DRAWING UPON; ACCESSORIES FOR WRITING OR DRAWING
Related Keywords
RULERSSET(S) -squaresSTRAIGHT -edges
6 direct subcodes
Child Classifications
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- B43L 7/02 T-squares
- B43L 7/027 Plural non-adjustable straightedges fixed at right angles
- B43L 7/033 Plural non-adjustable straightedges forming non-right angles
- B43L 7/04 with rollers
- B43L 7/08 with arrangements for attaching additional drawing equipment, e.g. for hatching, dotting
- B43L 7/1 Plural straightedges relatively movable
Top Applicants
Top 10 applicants by patent filingsfor class B43, 2013–2023, worldwide · Source: EPO PATSTAT
- PILOT CORPORATION 1,100
- MITSUBISHI PENCIL COMPANY 818
- SOCIETE BIC FR 380
- MITSUBISHI PENCIL COMPANY JP 371
- PILOT CORPORATION JP 273
- DELI GROUP COMPANY 249
- SHANGHAI M&G STATIONERY 176
- PENTEL 169
- ZEBRA PEN CORPORATION 153
- GUANGZHOU SHIRUI ELECTRICAL TECHNOLOGY COMPANY 124