B28C
Preparing clay
Official title: PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds B22C5/00)
B28C (Preparing clay) appears on 1,768 US grants and 1,455 published applications in this corpus.
Search patents in B28C- Granted patents
- 1,768
- Published applications
- 1,455
- Assignees
- 874
- Inventors
- 3,127
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 29 | 0 |
| 1978 | 28 | 0 |
| 1979 | 23 | 0 |
| 1980 | 24 | 0 |
| 1981 | 27 | 0 |
| 1982 | 23 | 0 |
| 1983 | 32 | 0 |
| 1984 | 36 | 0 |
| 1985 | 17 | 0 |
| 1986 | 24 | 0 |
| 1987 | 23 | 0 |
| 1988 | 18 | 0 |
| 1989 | 27 | 0 |
| 1990 | 26 | 0 |
| 1991 | 21 | 0 |
| 1992 | 25 | 0 |
| 1993 | 30 | 0 |
| 1994 | 24 | 0 |
| 1995 | 37 | 0 |
| 1996 | 42 | 0 |
| 1997 | 49 | 0 |
| 1998 | 47 | 0 |
| 1999 | 37 | 0 |
| 2000 | 28 | 0 |
| 2001 | 25 | 6 |
| 2002 | 41 | 34 |
| 2003 | 24 | 28 |
| 2004 | 26 | 43 |
| 2005 | 26 | 55 |
| 2006 | 23 | 51 |
| 2007 | 22 | 53 |
| 2008 | 22 | 67 |
| 2009 | 23 | 45 |
| 2010 | 42 | 44 |
| 2011 | 35 | 34 |
| 2012 | 24 | 32 |
| 2013 | 25 | 44 |
| 2014 | 28 | 47 |
| 2015 | 29 | 62 |
| 2016 | 37 | 65 |
| 2017 | 65 | 72 |
| 2018 | 52 | 57 |
| 2019 | 52 | 57 |
| 2020 | 59 | 92 |
| 2021 | 50 | 87 |
| 2022 | 60 | 89 |
| 2023 | 63 | 81 |
| 2024 | 67 | 88 |
| 2025 | 84 | 79 |
| 2026 | 43 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B28C 5/00Apparatus or methods for producing mixtures of cement with other substances1,201
- B28C 7/00Controlling the operation of apparatus for producing mixtures of clay or cement795
- B28C 9/00General arrangement or layout of plant238
- B28C 1/00Apparatus or methods for obtaining or processing clay75
- B28C 3/00Apparatus or methods for mixing clay with other substances9
Recent patents
- Calibrated concrete moisture control system6 Oct 2026US 12,752,459 B2Holcombe CVI, LLC
- Construction material assessment method and systems6 Oct 2026US 12,754,146 B2
- Mixer autonomy mode22 Sep 2026US 12,741,395 B2Oshkosh Corporation
- System and method for monitoring fresh concrete being handled in a concrete mixer using trained data processing engines1 Sep 2026US 12,722,326 B2Command Alkon Incorporated
- Mixer1 Sep 2026US 12,722,327 B2Saint-Gobain Placo
- System and method for producing a construction material suspension at a construction site8 Oct 2026US 2026/0307296 A1BAUER MAT Slurry Handling Systems Zweigniederlassung der BAUER Maschinen GmbH
- Roll Over Warning System8 Oct 2026US 2026/0309568 A1
- Real time water content and water-cement monitoring on a ready-mix concrete truck24 Sep 2026US 2026/0287573 A1Cidra Corporate Services Inc.
- Systems and methods for manufacturing calcined gypsum with reduced particle size and manufacturing gypsum board with same10 Sep 2026US 2026/0265129 A1United States Gypsum Company
- Concrete mixer vehicle with trainer cab13 Aug 2026US 2026/0233660 A1Oshkosh Corporation
Most cited
By later US patents
- Vehicle tracking, communication and fleet management system700US 6,611,755 B1Trimble Navigation Limited · 2003
- Control system and method for electric vehicle349US 6,885,920 B2Oshkosh Truck Corporation · 2005
- Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets312US 5,830,548 AE. Khashoggi Industries · 1998
- Failure mode operation for an electric vehicle285US 7,302,320 B2Oshkosh Truck Corporation · 2007
- Vehicle tracking, communication and fleet management system268US 6,892,131 B2Trimble Navigation Limited · 2005