B42D 1/004
Perforated or punched sheets
Official title: {Perforated or punched sheets}
B42D1/004 (Perforated or punched sheets) appears on 99 US grants and 98 published applications in this corpus.
Search patents in B42D- Granted patents
- 99
- Published applications
- 98
- Assignees
- 54
- Inventors
- 202
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 1 |
| 2003 | 0 | 4 |
| 2004 | 2 | 2 |
| 2005 | 1 | 6 |
| 2006 | 0 | 5 |
| 2007 | 2 | 2 |
| 2008 | 0 | 7 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 1 | 4 |
| 2012 | 2 | 7 |
| 2013 | 1 | 6 |
| 2014 | 2 | 7 |
| 2015 | 2 | 4 |
| 2016 | 5 | 3 |
| 2017 | 3 | 4 |
| 2018 | 6 | 4 |
| 2019 | 1 | 9 |
| 2020 | 7 | 6 |
| 2021 | 7 | 5 |
| 2022 | 5 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Animated perforated images21 Apr 2026US 12,609,058 B2Metrix Group Pty Ltd
- Book construction with die-cut holes demonstrating readily decodable words in ongoing story29 Jul 2025US 12,370,823 B1
- Notebook with configurable note-taking guides and organizational features20 Jun 2023US 11,682,316 B2Worklife Brands LLC
- Self-supporting book30 May 2023US 11,660,901 B2Kermit Zarley Enterprises
- Book and toy combination18 Oct 2022US 11,472,215 B2Wonderbox Workshop Limited
- Clip and Post for Switchable Notebook Covers and Accessories30 Jul 2026US 2026/0217048 A1
- Picture Book Kit and Method of Assembly5 Jun 2025US 2025/0178373 A1
- Animated perforated images30 Jan 2025US 2025/0037618 A1Metrix Group Pty Ltd
- Sticker, and an Insert for a Book18 Apr 2024US 2024/0123753 A1
- Multi-purpose three-dimensional object6 Jan 2022US 2022/0001688 A1
Most cited
By later US patents
- Apparatus for combining audio and visual indicia146US 5,484,292 A1996
- Sound illustrated book having page indicator circuit76US 4,809,246 A1989
- Tracing paper having a removable margin of pressure sensitive adhesive63US 4,884,826 A1989
- Apparatus for presenting visual material with identified sensory material63US 6,021,306 AFutech Interactive Products, Inc. · 2000
- Booklet45US 4,441,739 A1984