STFI
14Patents
0Active
14Granted
31Portfolio score
Filing activity: Nov 18, 1987 → Jan 8, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5582684A | Method of determining degree of reduction in a sulfate liquor using IR and UV spectroscopy | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5361638A | Arrangement for measuring mechanical properties of a foil material through use of an excitation unit that includes a laser | Physics | 14 | Expired |
| US5274244A | Method and apparatus for detecting bark and for determining the degree of barking on wood and chips | Physics | 13 | Expired |
| US4939929A | Measurement of the properties of a web in paper production | Physics | 13 | Expired |
| US5007985A | Method of reducing the energy consumption at the refining of cellulose containing material | Textiles; Paper | 9 | Expired |
| US4911790A | Paper production | Textiles; Paper | 8 | Expired |
| US6147750A | Determination of gloss quality | Physics | 4 | Expired |
| US6757065B1 | Method of determining an illuminated surface | Physics | 3 | Expired |
| US4911025A | Method and apparatus for preparing a suspension for measurement | Physics | 2 | Expired |
| US5331405A | Method and apparatus for measuring fibre flexibility | Physics | 2 | Expired |
| US4889592A | Process and apparatus for control in burning and slaking of lime and causticizing | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5908535A | Method for determination of filler content in paper | Textiles; Paper | 1 | Expired |
| US6615509B1 | Apparatus and a process for drying a paper web | Textiles; Paper | 0 | Expired |
| US6003572A | Process for making wood chips | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.