Downhole tools having mechanical joints with enhanced surfaces
US-9909365-B2 · Mar 6, 2018 · US
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Lin Chih patents
Lin Chih holds 3 patents in our database, with recent filings and technology areas summarized below.
| Metric | Value |
|---|---|
| Total patents | 3 |
| Recent patents | 0 |
| First publication | Apr 19, 2016 |
| Latest publication | Mar 6, 2018 |
Filing trend
Year-over-year patent counts for this assignee.
Recent patents
Latest publications where this party is an assignee.
Notable patents
Representative or frequently cited publications from precomputed assignee stats.
Downhole tools having mechanical joints with enhanced surfaces
US-9909365-B2 · Mar 6, 2018 · US
Downhole motor with diamond-like carbon coating on stator and/or rotor and method of making said downhole motor
US-9340854-B2 · May 17, 2016 · US
Drill bit with a dynamic metal seal
US-9316055-B2 · Apr 19, 2016 · US
Top CPC classifications
Most common classification codes in this portfolio.
| CPC | Patents |
|---|---|
| E21B10/22 | 2 |
| E21B4/02 | 2 |
| Y10T29/49826 | 1 |
| E21B10/25 | 1 |
| E21B2010/225 | 1 |
Technology areas
Mapped technology topics for this assignee.
| Technology | Patents |
|---|---|
| Fixed Constructions | 3 |
| Cross-Sectional Technologies | 2 |
| Chemistry & Metallurgy | 1 |
| Mechanical Engineering | 1 |