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King of Prussia, PA, United States of America

Howard Kallendar

Average Co-Inventor Count = 2.57

ph-index = 2

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 = 94

Howard KallendarMichael N Gwynn (6 patents)Howard KallendarLeslie Marie Palmer (4 patents)Howard KallendarHoward Kallendar (6 patents)Michael N GwynnMichael N Gwynn (14 patents)Leslie Marie PalmerLeslie Marie Palmer (35 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Smithkline Beecham Corporation (5 from 2,198 patents)

2. Other (1 from 832,680 patents)


6 patents:

1. 6277620 - Topoisomerase III

2. 6274139 - Topoisomerase I

3. 6156310 - Topoisomerase III

4. 6025156 - Topoisomerase III

5. 6013505 - Topoisomerase I

6. 5962303 - Topoisomerase III

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as of
12/6/2025
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