B65G 21/18
In three-dimensionally curved paths
Official title: in three-dimensionally curved paths
B65G21/18 (In three-dimensionally curved paths) appears on 272 US grants and 185 published applications in this corpus.
Search patents in B65G- Granted patents
- 272
- Published applications
- 185
- Assignees
- 128
- Inventors
- 368
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 12 | 0 |
| 1990 | 11 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 3 |
| 2003 | 6 | 5 |
| 2004 | 6 | 2 |
| 2005 | 0 | 9 |
| 2006 | 2 | 7 |
| 2007 | 5 | 4 |
| 2008 | 7 | 6 |
| 2009 | 1 | 1 |
| 2010 | 3 | 6 |
| 2011 | 3 | 5 |
| 2012 | 6 | 6 |
| 2013 | 2 | 8 |
| 2014 | 12 | 3 |
| 2015 | 8 | 8 |
| 2016 | 9 | 8 |
| 2017 | 7 | 7 |
| 2018 | 11 | 11 |
| 2019 | 11 | 12 |
| 2020 | 12 | 16 |
| 2021 | 16 | 8 |
| 2022 | 5 | 9 |
| 2023 | 5 | 8 |
| 2024 | 9 | 12 |
| 2025 | 13 | 10 |
| 2026 | 4 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Spiral conveyor multiple drive system1 Sep 2026US 12,722,902 B2JBT Marel Corporation
- Metal conveyor belt with service points7 Jul 2026US 12,673,827 B2Laitram, L. L. C.
- Conveying device including spiral track26 May 2026US 12,637,295 B2Energium Co., Ltd.
- Conveyor belt operation monitoring system10 Feb 2026US 12,545,525 B2Ashworth Bros., Inc.
- Load-bearing support plate, chain structure, and conveyor belt structure incorporating them16 Dec 2025US 12,497,246 B2Square Technology Group Co., Ltd
- Variable-capacity store24 Sep 2026US 2026/0283223 A1G. D S.p.A.
- Non-tenting conveyor belt6 Aug 2026US 2026/0225816 A1Laitram, L. L. C.
- Spiral conveyor multiple drive system18 Jun 2026US 2026/0167429 A1JBT Marel Corporation
- Ribless positive driven spiral system with pointed or rounded end transition elements23 Apr 2026US 2026/0109544 A1Ashworth Bros., Inc.
- Spiral duct and spiral oven23 Apr 2026US 2026/0110494 A1HYC (Singapore), Inc. Pte. Ltd.
Most cited
By later US patents
- Storing installation for carrying a number of piled helically extending turns of an endless conveyor belt76US 4,565,282 AFrigoscandia Contracting AB · 1986
- Self-supporting spiral conveyor72US 3,938,651 AFrigoscandia Contracting AB · 1976
- Apparatus for transporting mass flows of articles64US 5,413,213 AKorber AG · 1995
- Low tension plastic conveyor belt system61US 4,901,844 AKVP Systems, Inc. · 1990
- Positive drive helical conveyor system57US 4,741,430 AAshworth Bros., Inc. · 1988