E01C 23/094
About vertical or inclined axes
Official title: {about vertical or inclined axes, e.g. for core sampling (E01C23/0946 takes precedence)}
E01C23/094 (About vertical or inclined axes) appears on 34 US grants and 14 published applications in this corpus.
Search patents in E01C- Granted patents
- 34
- Published applications
- 14
- Assignees
- 13
- Inventors
- 44
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Apparatus for routering a surface and a cutting head and tool piece therefor24US 5,765,926 A1998
- Manhole casting removing device23US 4,458,949 A1984
- Methods and apparatus for cutting circular slots in pavement extending about manhole castings19US 5,470,131 AAmericore Technologies, Inc. · 1995
- Curb drain hole drill17US 3,967,687 A1976
- Machine for cutting curbstones, sidewalls and the like17US 4,433,871 A1984