B44D 3/38
Cord line chalkers
B44D3/38 (Cord line chalkers) appears on 165 US grants and 99 published applications in this corpus.
Search patents in B44D- Granted patents
- 165
- Published applications
- 99
- Assignees
- 28
- Inventors
- 216
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
| 2002 | 9 | 5 |
| 2003 | 2 | 3 |
| 2004 | 5 | 4 |
| 2005 | 8 | 3 |
| 2006 | 1 | 10 |
| 2007 | 7 | 5 |
| 2008 | 4 | 12 |
| 2009 | 9 | 5 |
| 2010 | 8 | 4 |
| 2011 | 4 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 4 | 0 |
| 2015 | 2 | 1 |
| 2016 | 1 | 9 |
| 2017 | 5 | 2 |
| 2018 | 2 | 4 |
| 2019 | 5 | 4 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 3 | 9 |
| 2023 | 9 | 5 |
| 2024 | 2 | 4 |
| 2025 | 9 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Marking and measuring fastener31 Mar 2026US 12,589,613 B2L&L Tools, LLC
- Weighted chalk line device24 Mar 2026US 12,583,250 B1
- Method and system for gondola alignment24 Feb 2026US 12,557,924 B2
- String line support system enabling single person use21 Oct 2025US 12,447,769 B2
- Chalk line marking devices and methods2 Sep 2025US 12,403,721 B1
- Chalk box with a flexible tip13 Nov 2025US 2025/0346066 A1Ox Tools Global Investments Ltd
- Marking and Measuring Fastener6 Feb 2025US 2025/0042196 A1L&L Tools, LLC
- Chalk line housing with cartridge tear mount7 Nov 2024US 2024/0367458 A1Klein Tools, Inc.
- Jam resistant chalk reel2 May 2024US 2024/0140136 A1Stanley Black & Decker, Inc.
- Chalk box with end hook seating assembly18 Apr 2024US 2024/0123759 A1Apex Brands, Inc.
Most cited
By later US patents
- Automatically retracting chalk line marking tool67US 5,822,874 A1998
- Chalk snap string device having improved brake means49US 4,765,557 A1988
- Tape measure with chalk line, pencil sharpener, friction position holder and stud holder48US 6,108,926 A2000
- Retractable chalk line device46US 5,509,616 A1996
- Chalk line retraction device43US 5,042,159 A1991