Inventor

Svante L. Wahlen

Inventor

Stenungsund, SE

Overview

6→

Patents

1977–2000

Patent span

Textiles

Primary field (CPC D)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

D21Hprimary

D21HPulp compositions29%

A61LMethods or apparatus for sterilising materials or objects in general12%

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials12%

D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials12%

C08LCompositions of macromolecular compounds6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

C11DDetergent compositions6%

D04HMaking textile fabrics, e.g. from fibres or filamentary material6%

D06NWall, floor, or like covering materials, e.g. linoleum, oilcloth, artificial leather, roofing felt, consisting of a fibrous web coated with a layer of macromolecular material6%

Y10TTechnical subjects covered by former us classification6%

PatentTitleYear

6,083,347'Absorbent material and production thereof'2000 5,938,894'Absorbent cellulosic material and production thereof'1999 4,476,323'Surface-active quaternary ammonium compounds for treatment of textiles and cellulosic materials'1984 4,341,597'Fibrous material having good dimensional and heat stability'1982 4,144,122'Quaternary ammonium compounds and treatment of cellulose pulp and paper therewith'1979 4,025,353'Viscose solutions and process for preparing the same'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1979Patents assigned to BEROL KEMI AB (2)· patent assignee history

1977–2000Based in Stenungsund, SE· patent location history

1982Patents assigned to ROCKWOOL AB (1)· patent assignee history

1984Patents assigned to EMANUELSSON JAN G (1)· patent assignee history

1984Patents assigned to HELLSTEN KARL M E (1)· patent assignee history

1999–2000Patents assigned to EKA CHEMICALS AB (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BEROL KEMI AB	2	1977–1979
EKA CHEMICALS AB	2	1999–2000
EMANUELSSON JAN G	1	1984
HELLSTEN KARL M E	1	1984
ROCKWOOL AB	1	1982

Locations

Location	Patents	Span
Stenungsund, SE	6	1977–2000