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Richfield, MN, United States of America

David K Douden

USPTO Granted Patents = 5

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 97(Granted Patents)

Location History:

Richfield, MN (US) (1987 - 1991)
Saint Paul, MN (US) (1988 - 1992)

Company Filing History:

Minnesota Mining and Manufacturing Company

Years Active: 1987-1992

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5104632 - Method of making thin silica flakes (1992-04-14),

2. 4985380 - Method of making thin refractory flakes (1991-01-15),

3. 4971697 - Thin silica flakes and method of making (1990-11-20),

4. 4769189 - Process for making hollow, ceramic spheroids (1988-09-06),

5. 4657810 - Fired hollow ceramic spheroids (1987-04-14),

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