IPC Main Group
B28B 11/00 Apparatus or processes for treating or working the shaped articles
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- WORKING CEMENT, CLAY, OR STONE
- Subclass:
- SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
Related Keywords
DRESSING articles moulded from clay or other ceramic compositions or cementitious material
8 direct subcodes
Child Classifications
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- B28B 11/02 for attaching appendages, e.g. handles, spouts
- B28B 11/04 for coating
- B28B 11/08 for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B 11/12 for removing parts of the articles by cutting
- B28B 11/14 for dividing shaped articles by cutting
- B28B 11/18 for removing burr
- B28B 11/22 for cleaning
- B28B 11/24 for curing, setting or hardening
Top Applicants
Top 10 applicants by patent filingsfor class B28, 2013–2023, worldwide · Source: EPO PATSTAT
- MITSUBOSHI DIAMOND INDUSTRIAL COMPANY 868
- QINGDAO GAOCE TECHNOLOGY COMPANY 678
- DISCO CORPORATION JP 500
- ZHOU ZHAODI 500
- MITSUBOSHI DIAMOND INDUSTRIAL COMPANY JP 456
- HILTI LI 455
- CORNING US 407
- UNITED STATES GYPSUM COMPANY US 375
- ZHENGZHOU YUAN DONG REFRACTORIES COMPANY 370
- HUNAN SANY KUAIERJU RESIDENTIAL INDUSTRY COMPANY 351