Description
Class B21K : MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS
Subclass 1/22: Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
B21K 1/22
Sub-Class
Stats
- 54 US PATENTS IN FORCE
- 3 US APPLICATIONS PENDING
- 18 Total Patent Owners
- 187 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11898473 | Method and device for manufacturing hollow, internally cooled valves | Jul 22, 20 | Feb 13, 24 | Federal-Mogul Valvetrain GmbH |
| 11813658 | Method for producing a hollow valve for internal combustion engines | Feb 10, 20 | Nov 14, 23 | Federal-Mogul Valvetrain GmbH |
| 11767774 | Poppet valve | Oct 17, 18 | Sep 26, 23 | EATON INTELLIGENT POWER LIMITED |
| 11732622 | Method for producing a hollow valve with an optimised interior stem geometry for internal combustion engines | Apr 18, 19 | Aug 22, 23 | Federal-Mogul Valvetrain GmbH |
| 11654471 | Method for producing a hollow valve for internal combustion engines | Jan 31, 19 | May 23, 23 | Federal-Mogul Valvetrain GmbH |
| 11536167 | Method for manufacturing engine poppet valve | May 11, 21 | Dec 27, 22 | NITTAN VALVE CO., LTD. |
| 11524330 | Method for producing a hollow valve for internal combustion engines | Jan 30, 20 | Dec 13, 22 | Federal-Mogul Valvetrain GmbH |
| 11384842 | Hollow poppet valve and manufacturing method therefor | Oct 22, 18 | Jul 12, 22 | EATON INTELLIGENT POWER LIMITED |
| 11333046 | Internally cooled valve for an internal combustion engine | Aug 06, 18 | May 17, 22 | Federal-Mogul Valvetrain GmbH |
| 11260448 | Method for the production of hollow chamber valves | Mar 06, 18 | Mar 01, 22 | Federal-Mogul Valvetrain GmbH |
| 11215091 | Hollow engine valve and manufacturing method therefor | Nov 26, 19 | Jan 04, 22 | FUJI HOLLOW VALVE INC. |
| 11215092 | Engine valve with raised ring or dimple | Dec 17, 19 | Jan 04, 22 | Caterpillar Inc. |
| 10787939 | Poppet valve for internal combustion engine | Aug 13, 19 | Sep 29, 20 | Cyclazoom LLC |
| 10710153 | Method for filling with metallic sodium | Jan 29, 16 | Jul 14, 20 | Nittan Valve Co. Ltd.; SUKEGAWA ELECTRIC CO., LTD.; |
| 10526933 | Hollow engine valve and manufacturing method therefor | Jul 24, 15 | Jan 07, 20 | FUJI HOLLOW VALVE INC. |
| 10519820 | Combustion engine intake valve | Oct 31, 16 | Dec 31, 19 | Not available |
| 10473002 | Poppet valve and method for manufacturing same | Feb 06, 17 | Nov 12, 19 | NITTAN VALVE CO., LTD. |
| 10443456 | Exhaust valve for an internal combustion engine, and a method of strengthening an annular valve seat area in an exhaust valve | Jul 09, 18 | Oct 15, 19 | MAN DIESEL & TURBO, FILIAL AF MAN DIESEL & TURBO SE, TYSKLAND |
| 10364710 | Engine valve and method of producing the same | Mar 21, 17 | Jul 30, 19 | Honda Motor Co. Ltd. |
| 10279440 | Precision forming method of high-efficiency and near-net hollow valve blank of engine | May 11, 15 | May 07, 19 | HUAIJI DENGYUN AUTO-PARTS (HOLDING) CO., LTD. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0167,755 | ENGINE VALVE AND MANUFACTURING METHOD THEREFOR | Jul 29, 20 | Jun 01, 23 | FUJI OOZX Inc. |
| 2022/0403,761 | METHOD AND DEVICE FOR MANUFACTURING HOLLOW, INTERNALLY COOLED VALVES | Jul 22, 20 | Dec 22, 22 | Not available |
| 2018/0304,344 | INTERNALLY COOLED VALVE FOR INTERNAL COMBUSTION ENGINES, AS WELL AS METHOD AND DEVICE FOR THE PRODUCTION THEREOF | Jul 06, 16 | Oct 25, 18 | Not available |
Top Owners in This Subclass
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 36 Months (last 2 years Issuances)
- 36 Months (last 5 years Issuances)