Growing community of inventors

Saint Paul, MN, United States of America

Qingsheng Cai

Average Co-Inventor Count = 4.00

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 879

Qingsheng CaiTheodore Arthur Johnson (4 patents)Qingsheng CaiWilliam Lloyd Beling (4 patents)Qingsheng CaiJerald Glantz (4 patents)Qingsheng CaiQingsheng Cai (4 patents)Theodore Arthur JohnsonTheodore Arthur Johnson (28 patents)William Lloyd BelingWilliam Lloyd Beling (18 patents)Jerald GlantzJerald Glantz (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sims Deltec, Inc. (4 from 48 patents)


4 patents:

1. 5743873 - Methods for using catheter connectors and portals, and methods of

2. 5632729 - Catheter connector

3. 5613945 - Portal assembly

4. 5562618 - Portal assembly and catheter connector

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as of
1/10/2026
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