System and method for forming elongated perforations in an inner barrel section of an engine
US-11473479-B2 · Oct 18, 2022 · US
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Setting work or tool carrier along a circular index line; Turret head drilling machines
Setting work or tool carrier along a circular index line; Turret head drilling machines · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B23B39/20 |
| Official title | Setting work or tool carrier along a circular index line; Turret head drilling machines |
| Display label | Setting work or tool carrier along a circular index line; Turret head drilling machines |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for forming perforations in a barrel structure
US-11059106-B2 · Jul 13, 2021 · US
System and method for forming elongated perforations in an inner barrel section of an engine
US-2020165954-A1 · May 28, 2020 · US
Chamfer removing device for wheels
US-10232448-B2 · Mar 19, 2019 · US
Chamfer removing device for wheels
US-2018333783-A1 · Nov 22, 2018 · US
Machining method and machining apparatus of valve holes of cylinder head, and clamp device
US-10052697-B2 · Aug 21, 2018 · US
Systems and methods for forming perforations in a barrel structure
US-2018154455-A1 · Jun 7, 2018 · US
System for forming perforations in a barrel section
US-9884370-B2 · Feb 6, 2018 · US
System for forming perforations in a barrel section
US-2016256935-A1 · Sep 8, 2016 · US
System and method for forming perforations in a barrel section
US-9370827-B2 · Jun 21, 2016 · US
Machining method and machining apparatus of valve holes of cylinder head, and clamp device
US-2015343537-A1 · Dec 3, 2015 · US
System and method for forming elongated perforations in an inner barrel section of an engine
US-2015267593-A1 · Sep 24, 2015 · US
Machining method and machining apparatus of valve holes of cylinder head, and clamp device
US-9114495-B2 · Aug 25, 2015 · US
System and method for forming perforations in a barrel section
US-2015063932-A1 · Mar 5, 2015 · US