Werner & Pfleiderer
Stuttgart, DE· latest recorded location
Werner & Pfleiderer is named on 108 US grants and 0 published applications in this corpus. Its most frequent classification is B29C (Shaping or joining of plastics).
- Granted patents
- 108
- Published applications
- 0
- Inventors
- 111
- Granted in 2026 so far
- 0
- Most recent grant
- 9 Mar 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 11 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
By publication year.
Technology areas
Share of 108 documents
- B29CShaping or joining of plastics60
- B29BPreparation or pretreatment of the material to be shaped47
- B01FMixing14
- Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9
- A21CMachines or equipment for making or processing doughs8
- B30BPresses in general6
- Y10TTechnical subjects covered by former us classification6
- B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding5
- Y02PLow-carbon manufacturing5
- B01DSeparation4
Recent patents
- Apparatus and method for impregnating fibrous strands with plastic material9 Mar 1999US 5,879,602 A
- Torque measuring device particularly for a multishaft extruder23 Feb 1999US 5,874,682 A
- Screw-type extruding machine having a screw element defining a groove with an expansion region at each end thereof25 Aug 1998US 5,797,677 A
- Underwater pelletizing die plate21 Oct 1997US 5,679,380 A
- Process for producing a die plate for underwater granulation of plastic material with an intermediate nickel alloy layer15 Apr 1997US 5,620,130 A
No published applications.
Most cited
By later US patents
- Process for mixing and proportioning several mixing components101US 4,498,783 A1985
- Apparatus for mixing and proportioning several mixing components86US 4,544,279 A1985
- Procedure and installation for the incinerating of sludge61US 4,361,100 A1982
- Screw kneader for plastic material having a controlling mixing section49US 5,318,358 A1994
- Method and apparatus for controlled supply of color concentrates into an extruder to obtain a plastic product of desired coloration47US 4,684,488 A1987