B21G 7/04
Of hairpins
Official title: of hairpins
B21G7/04 (Of hairpins) appears on 5 US grants and 5 published applications in this corpus.
Search patents in B21G- Granted patents
- 5
- Published applications
- 5
- Assignees
- 4
- Inventors
- 2
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year.
Subgroups
Granted patents
Recent patents
- Method of inserting a hairpin4 Nov 2025US 12,463,512 B2Hyundai Motor Company
- Method of inserting a hairpin23 Jan 2024US 11,881,748 B2Hyundai Motor Company
- Apparatus for molding hairpin7 Jun 2022US 11,356,004 B2Hyundai Motor Company
- Hair clipping device12 Mar 2019US 10,226,811 B2Tung Hing Plastic Manufactory Ltd.
- Hair clipping device9 May 2017US 9,642,431 B2Tung Hing Plastic Manufactory Ltd.
- Method of inserting a hairpin18 Apr 2024US 2024/0128842 A1Hyundai Motor Company
- Apparatus for Molding Hairpin and Method of Inserting Hairpin Using the Same6 Oct 2022US 2022/0320977 A1Hyundai Motor Company
- Apparatus for Molding Hairpin and Method of Inserting Hairpin Using the Same30 Dec 2021US 2021/0408879 A1Hyundai Motor Company
- Hair clipping device29 Jun 2017US 2017/0181517 A1Tung Hing Plastic Manufactory Ltd.
- Hair clipping device20 Aug 2015US 2015/0230578 A1Tung Hing Plastic Manufactory Ltd.
Most cited
By later US patents