Inventor
Walter L. Dean
Inventor
Memphis, TN, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
D06Mprimary
D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials36%
A61LMethods or apparatus for sterilising materials or objects in general18%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials18%
A61FFilters implantable into blood vessels9%
D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons9%
D04HMaking textile fabrics, e.g. from fibres or filamentary material9%
PatentTitleYear
5,549,791'Individualized cellulosic fibers crosslinked with polyacrylic acid polymers'19964,889,595'Process for making individualized, crosslinked fibers having reduced residuals and fibers thereof'19894,888,093'Individualized crosslinked fibers and process for making said fibers'19894,822,453'Absorbent structure containing individualized, crosslinked fibers'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Patents assigned to PROCTER & GAMBLE CELLULOSE (3)· patent assignee history
1989–1996Based in Memphis, TN, US· patent location history
1996Patents assigned to PROCTER & GAMBLE (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PROCTER & GAMBLE CELLULOSE | 3 | 1989 |
| PROCTER & GAMBLE | 1 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Memphis, TN, US | 4 | 1989–1996 |