Inventor
Karl-Heinz Schrader
Inventor
Hanover, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification26%
B41MPrinting, duplicating, marking, or copying processes22%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
A61KPreparations for medical, dental or toiletry purposes9%
A61QSpecific use of cosmetics or similar toiletry preparations9%
E04FFinishing work on buildings, e.g. stairs, floors4%
F16LPipes4%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
5,641,236'Coupling for joining tubes'19975,089,339'Aminoplast microencapsulation system'19925,011,634'Microcapsules and microcapsule production process'19914,965,025'Process for microencapsulating hydrophobic oils, the microcapsules obtained and the use thereof'19904,844,711'Hair colorants and methods of coloring hair'19894,824,823'Microcapsules containing oils and soluble color reaction components, their manufacture and use in color reaction recording systems'19894,661,115'Hair dyeing agents'19874,296,150'Transparent image marking sheet for projection systems'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to PELIKAN AG (1)· patent assignee history
1981–1991Based in Hanover, DE· patent location history
1987Based in Bevern, DE· patent location history
1989–1991Patents assigned to KOEHLER AUGUST PAPIERFAB (3)· patent assignee history
1989Patents assigned to BEIERSDORF AG (1)· patent assignee history
1989Based in Holzminden, DE· patent location history
1992Patents assigned to PIETSCH GUENTER (1)· patent assignee history
1992Based in Hannover, DE· patent location history
1997Patents assigned to KARL HEINZ SCHRADER (1)· patent assignee history
1997Based in Frondenberg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOEHLER AUGUST PAPIERFAB | 3 | 1989–1991 |
| BEIERSDORF AG | 1 | 1989 |
| KARL HEINZ SCHRADERself | 1 | 1997 |
| PELIKAN AG | 1 | 1981 |
| PIETSCH GUENTER | 1 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hanover, DE | 4 | 1981–1991 |
| Frondenberg, DE | 1 | 1997 |
| Hannover, DE | 1 | 1992 |
| Holzminden, DE | 1 | 1989 |
| Bevern, DE | 1 | 1987 |