E06B 3/725
With separate hollow frames
Official title: {with separate hollow frames, e.g. foam-filled}
E06B3/725 (With separate hollow frames) appears on 68 US grants and 58 published applications in this corpus.
Search patents in E06B- Granted patents
- 68
- Published applications
- 58
- Assignees
- 39
- Inventors
- 124
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 2 |
| 2014 | 4 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 3 |
| 2017 | 1 | 2 |
| 2018 | 2 | 7 |
| 2019 | 3 | 1 |
| 2020 | 4 | 3 |
| 2021 | 3 | 3 |
| 2022 | 3 | 9 |
| 2023 | 6 | 4 |
| 2024 | 6 | 5 |
| 2025 | 1 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gate apparatus and method2 Jun 2026US 12,644,332 B2Crusader Fence Company LLC
- Manufacturing method of an intelligent anti-terrorism protective door7 Apr 2026US 12,595,701 B2
- Lock hardware box28 Oct 2025US 12,454,846 B2Meshtec International Co., Ltd.
- Door-ready molding19 Nov 2024US 12,146,365 B2Larson Manufacturing Company of South Dakota, Inc.
- Powered garage door24 Sep 2024US 12,098,585 B1PREMIER DOOR Co.
- Door and door jamb assembly6 Aug 2026US 2026/0226788 A1
- Ecological door body4 Jun 2026US 2026/0152992 A1Guangdong OPK Smart Home Technology Co., Ltd.
- Internal reinforcement systems and methods for movable barriers22 Jan 2026US 2026/0022605 A1Overhead Door Corporation
- Partition system for dividing a room of a building into a plurality of rooms11 Sep 2025US 2025/0283327 A1Fourhundredfifty Inc.
- A manufacturing method of an intelligent anti-terrorism protective door3 Jul 2025US 2025/0215742 A1
Most cited
By later US patents
- Frame assembly for doors, windows and the like86US 4,720,951 ATherma-Tru Corporation · 1988
- Molded window door and method65US 5,894,706 A1999
- Modular anti-warping door structure58US 5,557,899 AMateriaux de Construction 2 Plus 2 Inc. · 1996
- Door panel and method of making57US 4,546,585 APeachtree Doors, Inc. · 1985
- Method of manufacturing a molded door skin from a flat wood composite, door skin produced therefrom, and door manufactured therewith52US 6,312,540 B1MDF, Inc. · 2001