B42F 13/402
Enabling the cover to be positioned upright
Official title: {enabling the cover to be positioned upright (for books B42D3/126)}
B42F13/402 (Enabling the cover to be positioned upright) appears on 52 US grants and 18 published applications in this corpus.
Search patents in B42F- Granted patents
- 52
- Published applications
- 18
- Assignees
- 19
- Inventors
- 65
- Latest grant
- 10 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 2 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Self-supporting book20 Feb 2018US 9,895,920 B2
- Three-ring easel binder with extension supports19 Sep 2017US 9,764,586 B2
- Searchable binder with security lock4 Jul 2017US 9,697,704 B1Microdata Corporation
- Notebook squaring apparatus12 Apr 2018US 2018/0099522 A1
- Self-supporting book29 Jun 2017US 2017/0182831 A1Kermit Zarley Enterprises
- Three-ring easel binder with extension supports2 Feb 2017US 2017/0028768 A1
- Three-ring easel binder with extension supports25 Jun 2015US 2015/0174946 A1
- Three-ring binder with hole punch11 Dec 2014US 2014/0363215 A1
Most cited
By later US patents
- Artists' portfolio48US 4,213,520 A1980
- Gravity lock bookstand and binder47US 4,880,327 A1989
- Notebook for storage of computer disks and loose-leaf documentation44US 4,765,462 ACommunications Packaging Corporation · 1988
- Looseleaf binder-display stand38US 4,240,761 A1980
- Multiple use study device37US 4,105,182 A1978