B65D 27/34
Lines of weakness
B65D27/34 (Lines of weakness) appears on 121 US grants and 92 published applications in this corpus.
Search patents in B65D- Granted patents
- 121
- Published applications
- 92
- Assignees
- 62
- Inventors
- 189
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 1 |
| 2002 | 11 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 8 |
| 2005 | 3 | 3 |
| 2006 | 1 | 7 |
| 2007 | 3 | 3 |
| 2008 | 2 | 3 |
| 2009 | 1 | 1 |
| 2010 | 3 | 10 |
| 2011 | 1 | 5 |
| 2012 | 3 | 5 |
| 2013 | 4 | 3 |
| 2014 | 4 | 4 |
| 2015 | 2 | 5 |
| 2016 | 4 | 4 |
| 2017 | 3 | 3 |
| 2018 | 3 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 3 |
| 2021 | 3 | 5 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 1 |
| 2025 | 1 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Envelope with internal pocket1 Sep 2026US 12,722,855 B1Admail West, Inc.
- Reusable envelope with pre-cut closure flap, method and machine for manufaturing such an envelope14 Jul 2026US 12,679,599 B2Holweg Group
- Coin mailer and display device31 Mar 2026US 12,592,112 B2Antsy Labs, LLC
- Blank and paperboard envelope formed therefrom2 Sep 2025US 12,404,075 B2Calumet Carton Company
- Coin mailer and display device28 May 2024US 11,995,941 B2Antsy Labs, LLC
- Greeting cards and envelopes with concealed features19 Mar 2026US 2026/0077611 A1Wolf Punch, LLC
- Flexible Mailer and Blank for Making Same29 Jan 2026US 2026/0028157 A1Conformer Products, Inc.
- Envelope and release cover formed from common substrate25 Sep 2025US 2025/0296740 A1Pregis LLC
- Envelope having a closing flap, method and machine for manufacturing such an envelope27 Feb 2025US 2025/0065590 A1Holweg Group
- Shipping mailer with corrugated material having adhered and non-adhered zones20 Feb 2025US 2025/0058953 A1Packaging Corporation of America
Most cited
By later US patents
- Multi-use envelope64US 5,503,328 AWaldorf Corporation · 1996
- Combination greeting card and gift pouch49US 5,133,496 ACards and Pouches, Inc. · 1992
- Easy open envelope47US 6,223,977 B1Westvaco Corporation · 2001
- Combination envelope and display device45US 4,640,030 A1987
- Stationery having snap-open envelope with remailable portion43US 4,334,618 A1982