B43L 11/04
For drawing ellipses
Official title: for drawing ellipses
B43L11/04 (For drawing ellipses) appears on 48 US grants and 5 published applications in this corpus.
Search patents in B43L- Granted patents
- 48
- Published applications
- 5
- Assignees
- 8
- Inventors
- 54
- Latest grant
- 16 Jun 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 6 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Drawing apparatus16 Jun 2009US 7,546,686 B1Genie Toys plc
- Instrument for drawing ellipse or the like9 Dec 2008US 7,461,459 B2
- Thread ruler and a multi-function drafting instrument25 Jul 2006US 7,080,459 B1
- Compass and ellipsograph for persons with manual limitations3 Jan 2006US 6,981,328 B2
- Oval cutter23 Apr 2002US 6,374,503 B1Alterra Holdings Corporation
- Method and apparatus for creating designs, images, videos, patterns, or altered surfaces24 Apr 2025US 2025/0128538 A1
- Adjustable Rotary Structure18 Jun 2009US 2009/0151175 A1
- Drawing apparatus4 Jun 2009US 2009/0139099 A1Genie Toys plc
- Instrument for drawing ellipse or the like17 Jul 2008US 2008/0168668 A1
- Compass and ellipsograph for persons with manual limitations18 Nov 2004US 2004/0226180 A1
Most cited
By later US patents