B23G THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS OR NUTS, IN CONJUNCTION THEREWITH
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- Subclass:
- THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS OR NUTS, IN CONJUNCTION THEREWITH
Description
This subclass encompasses machines, tools, and processes for cutting external and internal threads on workpieces, as well as forming, shaping, and finishing operations on screws, bolts, bolt heads, and nuts during or following thread production. Covered technologies include thread-cutting machines (lathes, threading machines, tapping machines), cutting tools (thread dies, taps, cutting inserts), and automated systems for complete screw and fastener manufacturing. The classification also includes associated operations such as head forming, slot cutting, chamfering, and deburring when performed as integral steps in screw or bolt production.
Filing statistics
IPC subclass B23G recorded 18,811 patent applications worldwide between 2013 and 2023. Annual filings grew from 985 in 2013 to 2,200 in 2023 (+123%), peaking at 2,707 applications in 2020. The most active applicants in class B23 are ITW (ILLINOIS TOOL WORKS) (3,407 applications), FANUC (3,120 applications) and DISCO ABRASIVE SYSTEM (2,777 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B23G 1/00 Thread cutting; Automatic machines specially designed therefor
- B23G 11/00 Feeding or discharging mechanisms combined with, or arranged in, or specially adapted for use in connection with, thread-cutting machines
- B23G 3/00 Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
- B23G 5/00 Thread-cutting tools; Die-heads
- B23G 7/00 Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
- B23G 9/00 Working screws, bolt heads or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw thread
Top Applicants
Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT
- ITW (ILLINOIS TOOL WORKS) US 3,407
- FANUC JP 3,120
- DISCO ABRASIVE SYSTEM 2,777
- HAN'S LASER TECHNOLOGY INDUSTRY GROUP COMPANY 2,629
- ROBERT BOSCH DE 2,468
- FANUC 2,273
- DISCO CORPORATION JP 2,267
- GE (GENERAL ELECTRIC COMPANY) US 1,611
- CHINESE ACADEMY OF SCIENCES 1,534
- ISCAR IL 1,499