Description
Class B21K : MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS
Subclass 1/18: Making machine elements pistons or plungers
B21K 1/18
Sub-Class
Stats
- 48 US PATENTS IN FORCE
- 5 US APPLICATIONS PENDING
- 14 Total Patent Owners
- 125 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11661903 | Forming near-net shape single-piece piston blanks | Feb 21, 22 | May 30, 23 | KS Kolbenschmidt US, Inc. |
| 11286877 | Methods for forging a piston blank | Feb 19, 19 | Mar 29, 22 | KS Kolbenschmidt US, Inc. |
| 11213880 | Production method, piston blank, piston and axial piston machine having said piston | Aug 22, 18 | Jan 04, 22 | Schaeffler Technologies AG & Co. KG |
| 11148189 | Forged piston with oriented grain flow | Oct 07, 19 | Oct 19, 21 | Not available |
| 11053885 | Cooling channel having dam and funnel | Dec 19, 17 | Jul 06, 21 | KS Kolbenschmidt GmbH |
| 10843254 | Hot forming of cooling galleries in steel pistons | Jul 24, 19 | Nov 24, 20 | Ohio State Innovation Foundation |
| 10837400 | Method for manufacturing a piston | Oct 27, 17 | Nov 17, 20 | Mahle International GmbH |
| 10787724 | Aluminum alloy for insert ring, aluminum insert ring using the same, and piston manufacturing method using the same | Nov 22, 17 | Sep 29, 20 | Hyundai Motor Company; Kia Motors Corporation; |
| 10787991 | Complex-shaped forged piston oil galleries | Mar 23, 16 | Sep 29, 20 | Tenneco Inc. |
| 10711732 | Reduced height piston | Jan 19, 17 | Jul 14, 20 | INDUSTRIAL PARTS DEPOT, LLC |
| 10704491 | Piston cooling gallery shaping to reduce piston temperature | Oct 11, 18 | Jul 07, 20 | Tenneco Inc. |
| 10584659 | Robust, lightweight, low compression height piston and method of construction thereof | Mar 22, 16 | Mar 10, 20 | Tenneco Inc. |
| 10569325 | Piston of an internal combustion engine having alkali metal cooling and method for production thereof | Aug 29, 16 | Feb 25, 20 | KS Kolbenschmidt GmbH |
| 10415499 | Method for producing a piston for an internal combustion engine and piston produced by said method | Mar 18, 14 | Sep 17, 19 | Mahle International GmbH |
| 10413967 | Method for producing a sintered part with high radial precision, and set of parts comprising joining parts to be sintered | Sep 19, 14 | Sep 17, 19 | GKN SINTER METALS ENGINEERING GMBH |
| 10363599 | Hot forming of cooling galleries in steel pistons | Nov 29, 18 | Jul 30, 19 | Ohio State Innovation Foundation |
| 10359001 | Method for producing a piston | Oct 18, 16 | Jul 23, 19 | Mahle International GmbH |
| 10265811 | Method for producing a piston for an internal combustion engine and piston produced by said method | Mar 18, 14 | Apr 23, 19 | Mahle International GmbH |
| 10253722 | Methods for forging a piston blank | Mar 08, 16 | Apr 09, 19 | KS Kolbenschmidt US, Inc. |
| 10247134 | Complex-shaped forged piston oil galleries | Jul 24, 17 | Apr 02, 19 | Tenneco Inc. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2020/0346,278 | PRODUCTION METHOD, PISTON BLANK, PISTON AND AXIAL PISTON MACHINE HAVING SAID PISTON | Aug 22, 18 | Nov 05, 20 | Schaeffler Technologies AG & Co. KG |
| 2019/0344,330 | HOT FORMING OF COOLING GALLERIES IN STEEL PISTONS | Jul 24, 19 | Nov 14, 19 | Not available |
| 2019/0076,913 | PISTON PIN AND METHOD FOR MANUFACTURING PISTON PIN | Jan 20, 17 | Mar 14, 19 | Hitachi Automotive Systems, Ltd. |
| 2019/0022,739 | Piston Having Three Ring Grooves And A Further Groove Having A Joint | Jan 20, 17 | Jan 24, 19 | Not available |
| 2017/0173,665 | Method of Producing a Cooling Channel System for Internal Combustion Engines and Piston Produced in This Way | Mar 06, 17 | Jun 22, 17 | KS KOLBENSCHMIDT GMBH |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 31 Months (last 2 years Issuances)
- 31 Months (last 5 years Issuances)