---
title: "Kingdomway: Obtained an invention patent certificate"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/256082982.md"
description: "Kingdomway announced that the company and its subsidiaries recently received an invention patent certificate issued by the National Intellectual Property Administration. The invention is titled \"A Preparation Method and Preparation Device for 7-Dehydrocholesterol and Vitamin D3,\" with patent number ZL 2023.1 billion, and the patent rights are valid for twenty years. This invention relates to the field of organic synthesis and can effectively improve the yield and purity of 7-Dehydrocholesterol"
datetime: "2025-09-05T08:23:01.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/256082982.md)
  - [en](https://longbridge.com/en/news/256082982.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/256082982.md)
---

# Kingdomway: Obtained an invention patent certificate

Kingdomway announced that the company and its subsidiaries recently received a patent certificate issued by the National Intellectual Property Administration for an invention titled "A Preparation Method and Preparation Device for 7-Dehydrocholesterol and Vitamin D3," with patent number ZL 2023.1 billion, and a patent term of twenty years. This invention relates to the field of organic synthesis and can effectively improve the yield and purity of 7-Dehydrocholesterol

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