Ingot puller apparatus including in-situ cable cleaner
US-2026027595-A1 · Jan 29, 2026 · US
Seed holders, e.g. chucks
Seed holders, e.g. chucks · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C30B15/32 |
| Official title | Seed holders, e.g. chucks |
| Display label | Seed holders, e.g. chucks |
| Total patents | 58 |
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 | 9 |
| 2016 | 6 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 8 |
| 2022 | 3 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Seed crystal holders and crystal growth methods
US-2025207295-A1 · Jun 26, 2025 · US
Device and method for producing a monocrystalline silicon rod
US-2025092563-A1 · Mar 20, 2025 · US
Connecting devices
US-2025059673-A1 · Feb 20, 2025 · US
Seed crystal holder for pulling up single crystal and method of manufacturing silicon single crystal using the same
US-11371160-B2 · Jun 28, 2022 · US
Mono-crystalline silicon growth apparatus
US-11326272-B2 · May 10, 2022 · US
Silicon supply part, and device and method for growing silicon monocrystalline ingot comprising same
US-11255023-B2 · Feb 22, 2022 · US
Cleaning device for monocrystal pulling apparatus
US-11198161-B2 · Dec 14, 2021 · US
Systems for selectively feeding chunk polysilicon or granular polysilicon in a crystal growth chamber
US-11085126-B2 · Aug 10, 2021 · US
Apparatus for producing an ingot comprising a crucible body with a lid assembly having a movable core member and method for producing silicon carbide ingot using the apparatus
US-11078599-B2 · Aug 3, 2021 · US
Growth of plural sample rods to determine impurity build-up during production of single crystal silicon ingots
US-11047066-B2 · Jun 29, 2021 · US
Device for growing a flat single crystal from a seed crystal in a crystallisation solution and process for manufacturing this single crystal
US-10934632-B2 · Mar 2, 2021 · US
Driving unit measuring apparatus and silicon crystal growing apparatus having same
US-10920338-B1 · Feb 16, 2021 · US
Driving unit measuring apparatus and silicon crystal growing apparatus having same
US-2021025076-A1 · Jan 28, 2021 · US
Seed crystal holder for pulling up single crystal and method of manufacturing silicon single crystal using the same
US-2021010156-A1 · Jan 14, 2021 · US
Seed crystal holder for pulling up single crystal and method of manufacturing silicon single crystal using the same
US-10822717-B2 · Nov 3, 2020 · US
Silicon supply part, and device and method for growing silicon monocrystalline ingot comprising same
US-2020232116-A1 · Jul 23, 2020 · US
Mono-crystalline silicon growth apparatus
US-2020208295-A1 · Jul 2, 2020 · US
Apparatus for producing ingot and method for producing silicon carbide ingot using the apparatus
US-2020190698-A1 · Jun 18, 2020 · US
Systems for selectively feeding chunk polysilicon or granular polysilicon in a crystal growth chamber
US-2020080225-A1 · Mar 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C30B15/32?
- CPC C30B15/32 is the Cooperative Patent Classification code for “Seed holders, e.g. chucks.”
- How many patents are filed under CPC C30B15/32 (Seed holders, e.g. chucks)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC C30B15/32 growing?
- Publication counts under this code: 3 in 2022 vs 3 in 2025 (latest complete years).