Keltech Engineering, Inc.
Records under this name other than the patents Keltech Engineering, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 3 patents it holds.
Showing 1 to 10 of 10 · Back to Keltech Engineering, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,926,378 | Abrasive coated disk islands using magnetic font sheet Lapsed on the fee record Ended Feb 23, 2025 · From the USPTO record | Lapsed on the fee record | Ended Feb 23, 2025 | From the USPTO record |
| US 6,607,157 | Air bearing system with an air cylinder web dancer system or idler rolls Term ended Term ended Jul 14, 2019 · From the USPTO record | Term ended | Term ended Jul 14, 2019 | From the USPTO record |
| US 6,769,969 | Raised island abrasive, method of use and lapping apparatus Term ended Term ended Dec 29, 2018 · From the USPTO record | Term ended | Term ended Dec 29, 2018 | From the USPTO record |
| US 6,149,506 | Lapping apparatus and method for high speed lapping with a rotatable abrasive platen Term ended Term ended Oct 7, 2018 · From the USPTO record | Term ended | Term ended Oct 7, 2018 | From the USPTO record |
| US 6,102,777 | Lapping apparatus and method for high speed lapping with a rotatable abrasive platen Term ended Term ended Mar 6, 2018 · From the USPTO record | Term ended | Term ended Mar 6, 2018 | From the USPTO record |
| US 6,048,254 | Lapping apparatus and process with annular abrasive area Term ended Term ended Mar 6, 2017 · From the USPTO record | Term ended | Term ended Mar 6, 2017 | From the USPTO record |
| US 6,120,352 | Lapping apparatus and lapping method using abrasive sheets Term ended Term ended Mar 6, 2017 · From the USPTO record | Term ended | Term ended Mar 6, 2017 | From the USPTO record |
| US 5,910,041 | Lapping apparatus and process with raised edge on platen Term ended Term ended no later than Jun 8, 2019 · Low confidence | Term ended | Term ended no later than Jun 8, 2019 | Low confidence |
| US 5,967,882 | Lapping apparatus and process with two opposed lapping platens Term ended Term ended no later than Oct 19, 2019 · Low confidence | Term ended | Term ended no later than Oct 19, 2019 | Low confidence |
| US 5,993,298 | Lapping apparatus and process with controlled liquid flow across the lapping surface Term ended Term ended no later than Nov 30, 2019 · Low confidence | Term ended | Term ended no later than Nov 30, 2019 | Low confidence |