B29D 30/0661
Rigid cores therefor
Official title: {Rigid cores therefor, e.g. annular or substantially toroidal cores (cores for building tyres B29D30/12; drums for building tyres B29D30/24)}
B29D30/0661 (Rigid cores therefor) appears on 69 US grants and 65 published applications in this corpus.
Search patents in B29D- Granted patents
- 69
- Published applications
- 65
- Assignees
- 29
- Inventors
- 106
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 8 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 6 |
| 2006 | 1 | 5 |
| 2007 | 1 | 5 |
| 2008 | 3 | 3 |
| 2009 | 1 | 4 |
| 2010 | 3 | 7 |
| 2011 | 2 | 1 |
| 2012 | 4 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 3 |
| 2015 | 6 | 9 |
| 2016 | 4 | 4 |
| 2017 | 2 | 4 |
| 2018 | 2 | 1 |
| 2019 | 6 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Facility and method for manufacturing an annular tire on a lightweight monolithic core25 Nov 2025US 12,479,177 B2Compagnie Generale Des Etablissements Michelin
- Pneumatic tire for resonance noise reduction25 May 2021US 11,014,415 B2Hankook Tire Co., Ltd.
- Tire3 Nov 2020US 10,821,692 B2Bridgestone Corporation
- Rigid inner mold for forming tire, and method of manufacturing tire using the same10 Dec 2019US 10,500,803 B2Sumitomo Rubber Industries, Ltd.
- Rigid core mold removal device and tire manufacturing method22 Oct 2019US 10,449,741 B2Sumitomo Rubber Industries, Ltd.
- Mold for producing annular rubber component30 May 2024US 2024/0173931 A1The Goodyear Tire & Rubber Company
- Grooved-core tooling for manufacturing pneumatic tires reinforced by stays passing through the inflation cavity23 May 2024US 2024/0165901 A1Compagnie Generale Des Etablissements Michelin
- Facility and method for manufacturing an annular tire on a lightweight monolithic core7 Mar 2024US 2024/0075701 A1Compagnie Generale Des Etablissements Michelin
- Tire4 Oct 2018US 2018/0281329 A1Bridgestone Corporation
- Pneumatic tire for resonance noise reduction, and method for manufacturing the same8 Jun 2017US 2017/0157997 A1Hankook Tire Co., Ltd.
Most cited
By later US patents
- Mold for the molding and vulcanizing of a rubber tire65US 4,895,692 ACompagnie Generale Des Establissements Michelin · 1990
- Segmented toroidal core for manufacturing pneumatic tires32US 6,113,833 ABridgestone Corporation · 2000
- Process of manufacturing pneumatic tires and apparatus for carrying out the process29US 4,277,295 APolyair Maschinenbau G.m.b.H. · 1981
- Apparatus for molding pneumatic vehicular tires27US 4,043,725 A1977
- Method of and apparatus for making flotation tire and tire product27US 4,248,287 ABrad Ragan, Inc. · 1981