G01C 15/10
Plumb lines
G01C15/10 (Plumb lines) appears on 230 US grants and 121 published applications in this corpus.
Search patents in G01C- Granted patents
- 230
- Published applications
- 121
- Assignees
- 91
- Inventors
- 382
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 0 |
| 2002 | 11 | 12 |
| 2003 | 10 | 3 |
| 2004 | 10 | 3 |
| 2005 | 3 | 5 |
| 2006 | 5 | 7 |
| 2007 | 5 | 7 |
| 2008 | 5 | 9 |
| 2009 | 7 | 4 |
| 2010 | 7 | 3 |
| 2011 | 6 | 4 |
| 2012 | 0 | 4 |
| 2013 | 4 | 5 |
| 2014 | 3 | 2 |
| 2015 | 4 | 3 |
| 2016 | 4 | 3 |
| 2017 | 2 | 7 |
| 2018 | 6 | 4 |
| 2019 | 3 | 7 |
| 2020 | 10 | 5 |
| 2021 | 5 | 4 |
| 2022 | 5 | 3 |
| 2023 | 4 | 4 |
| 2024 | 2 | 7 |
| 2025 | 2 | 2 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vertical-height gauge and measuring method15 Sep 2026US 12,736,321 B2Anhui Agricultural University
- String line apparatus7 Jul 2026US 12,674,666 B2Beyond CenterLine Solutions LLC
- Laser level with adjustable direct projection to targets16 Jun 2026US 12,656,115 B2Milwaukee Electric Tool Corporation
- Pile installation confirmation instrument21 Apr 2026US 12,606,973 B2Array Tech, Inc.
- Target and plumbing system for transferring a point of interest to a jobsite surface24 Mar 2026US 12,584,739 B2Hilti Aktiengesellschaft
Most cited
By later US patents
- Building surveying device with an automatic plumb point finding functionality246US 10,054,441 B2Leica Geosystems AG · 2018
- Level line and limb line combination131US 5,864,956 A1999
- Automatic level and plumb tool75US 5,459,932 ALeveLite Technology, Inc. · 1995
- Three-dimensional laser levelling and angle-calibrating instrument with multiple functions73US 5,983,510 A1999
- Automatic optical levelling, plumbing, and verticality-determining apparatus57US 6,035,540 A2000