Patents by Inventor Zhengfu Wang

Zhengfu Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microencapsulated pheochromocyte of ox adrenal medulla as medicine for curing pain
    Patent number: 6645488
    Abstract: Microencapsulated medicine of ox adrenal medulla pheochromocyte (BBC) for treating pain is prepared through the following steps: 1. suspending BBC in solution of sodium alginate; 2. dispersing the suspension in solution of calcium chloride to form calcium alginate bead deposit; 3. mixing the deposit with solution of polylysine to form a coating and depositing; 4. mixing the deposit with sodium alginate to form a coating; 5. displacing the calcium ions in deposit with sodium citrate for microencapsulating BBC; 6. transferring the microencapsulated BBC into culture liquid for storage. The medicine can release analgesic substance for several months after it be implanted into human body.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: November 11, 2003
    Inventors: Yilong Xue, Limin He, Zhengfu Wang, Li Zhang, Xinjian Li
  • Microencapsulated pheochromocyte of ox adrenal medulla as medicine for curing pain
    Publication number: 20020119125
    Abstract: Microencapsulated medicine of ox adrenal medulla pheochromocyte (BBC) for treating pain is prepared through the following steps: 1. suspending BBC in solution of sodium alginate; 2. dispersing the suspension in solution of calcium chloride to form calcium alginate bead deposit; 3. mixing the deposit with solution of polylysine to form a coating and depositing; 4. mixing the deposit with sodium alginate to form a coating; 5. displacing the calcium ions in deposit with sodium citrate for microencapsulating BBC; 6. transferring the microencapsulated BBC into culture liquid for storage. The medicine can release analgesic substance for several months after it be implanted into human body.
    Type: Application
    Filed: December 14, 2001
    Publication date: August 29, 2002
    Inventors: Yilong Xue, Limin He, Zhengfu Wang, Li Zhang, Xinjian Li