Stfi
Stockholm, SE· latest recorded location
STFI is named on 13 US grants and 0 published applications in this corpus. Its most frequent classification is G01N (Investigating or analysing materials by determining their chemical or physical properties).
- Granted patents
- 13
- Published applications
- 0
- Inventors
- 30
- Granted in 2026 so far
- 0
- Most recent grant
- 29 Jun 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
By publication year.
Technology areas
Share of 13 documents
- G01NInvestigating or analysing materials by determining their chemical or physical properties6
- B27LRemoving bark or vestiges of branches1
- C04BLime, magnesia1
- D21BFibrous raw materials or their mechanical treatment1
- D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials1
- D21DTreatment of the materials before passing to the paper-making machine1
- D21FPaper-making machines1
- D21GCalenders1
- D21HPulp compositions1
- G01BMeasuring length, thickness or similar linear dimensions1
Recent patents
- Method of determining an illuminated surface29 Jun 2004US 6,757,065 B1
- Apparatus and a process for drying a paper web9 Sep 2003US 6,615,509 B1
- Determination of gloss quality14 Nov 2000US 6,147,750 A
- Process for making wood chips21 Dec 1999US 6,003,572 A
- Method for determination of filler content in paper1 Jun 1999US 5,908,535 A
No published applications.
Most cited
By later US patents
- Method of determining degree of reduction in a sulfate liquor using IR and UV spectroscopy24US 5,582,684 A1996
- Measurement of the properties of a web in paper production14US 4,939,929 A1990
- Arrangement for measuring mechanical properties of a foil material through use of an excitation unit that includes a laser14US 5,361,638 A1994
- Method and apparatus for detecting bark and for determining the degree of barking on wood and chips13US 5,274,244 A1993
- Method of reducing the energy consumption at the refining of cellulose containing material9US 5,007,985 A1991