Keltech Engineering
Roseville, MN, US· latest recorded location
Keltech Engineering is named on 12 US grants and 1 published applications in this corpus. Its most frequent classification is B24B (Machines, devices, or processes for grinding or polishing).
- Granted patents
- 12
- Published applications
- 1
- Inventors
- 4
- Granted in 2026 so far
- 2
- Most recent grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. 2026 runs to 8 Oct.
Technology areas
Share of 13 documents
Recent patents
- Abrasive disc with vitrified agglomerate islands30 Jun 2026US 12,667,934 B2
- Abrasive vitrified agglomerate disc with porous islands30 Jun 2026US 12,667,935 B1
- Abrasive lapping head with floating and rigid workpiece carrier4 Jul 2023US 11,691,241 B1
- Raised island abrasive, method of use and lapping apparatus3 Aug 2004US 6,769,969 B1
- Air bearing system with an air cylinder web dancer system or idler rolls19 Aug 2003US 6,607,157 B1
Most cited
By later US patents
- Lapping apparatus and method for high speed lapping with a rotatable abrasive platen113US 6,149,506 A2000
- Raised island abrasive, method of use and lapping apparatus111US 6,769,969 B12004
- Lapping apparatus and method for high speed lapping with a rotatable abrasive platen77US 6,102,777 A2000
- Lapping apparatus and process with controlled liquid flow across the lapping surface62US 5,993,298 A1999
- Lapping apparatus and process with raised edge on platen54US 5,910,041 A1999