Carbon nanotubes having larger diameter and lower bulk density and process for preparing same
US-2018162734-A1 · Jun 14, 2018 · US
Bundle-type carbon nanotubes and method for preparing the same
US12522502B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12522502-B2 |
| Application number | US-202217735638-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 3, 2022 |
| Priority date | Mar 17, 2017 |
| Publication date | Jan 13, 2026 |
| Grant date | Jan 13, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m 3 , a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A method for preparing a bundle-type carbon nanotube, comprising: preparing a mixture comprising an organic acid and a vanadium-based compound in a molar ratio of 1:(1 to 30); preparing a catalyst precursor comprising the mixture and a cobalt-based compound; performing first thermal treatment of aluminum hydroxide to prepare a support; supporting the catalyst precursor in the support and performing second thermal treatment under a pressure of 0.1 to 2 above atmospheric pressure bar to prepare a supported catalyst; and reacting the supported catalyst with a carbon-based compound. 2 . The method of claim 1 , wherein the preparation of a catalyst precursor comprises preparing a catalyst precursor comprising the mixture and a cobalt precursor so as to have a molar ratio of vanadium and cobalt of 1:(1 to 100). 3 . The method of claim 1 , wherein the organic acid is citric acid.
Assignees
Inventors
Classifications
mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title
Electric properties · CPC title
Surface area · CPC title
Powder tap density · CPC title
Solid density · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12522502B2 cover?
- The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m 3 , a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B32/162. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 13 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).