| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | Japan | 7 | |
| #3 | United States | 6 | |
| #4 | EPO (European Patent Office) | 5 | |
| #5 | France | 2 | |
| #6 | Hong Kong | 2 | |
| #7 | Republic of Korea | 2 | |
| #8 | Austria | 1 | |
| #9 | Switzerland | 1 | |
| #10 | United Kingdom | 1 | |
| #11 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Machines | |
| #3 | Consumer goods | |
| #4 | Electrical machinery and energy | |
| #5 | Audio-visual technology | |
| #6 | Environmental technology | |
| #7 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Optical systems | |
| #2 | Cameras | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Travel equipment | |
| #6 | Hand carried bags | |
| #7 | Reduction of greenhouse gas emissions | |
| #8 | Casings and printed circuits | |
| #9 | Batteries | |
| #10 | Treatment of glass |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hengst Alfred | 12 |
| #2 | Koelsch Lothar | 8 |
| #3 | Keiner Heinz | 7 |
| #4 | Crema Rolf | 5 |
| #5 | Speier Rolf | 4 |
| #6 | Ruehl Ernst | 3 |
| #7 | Rootaru Kerushiyu | 3 |
| #8 | Farnung Peter H | 2 |
| #9 | Hansu Geruharuto Kooguraa | 2 |
| #10 | Schaefer Klaus-Dieter | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE19632525C1 | Multistage spring-loaded pushbutton switch e.g. for electronic photographic camera light metering | |
| DE4407990A1 | Carrying strap attachment | |
| EP0590264A1 | Battery holder for a camera | |
| DE4316381A1 | Method and device for applying coatings that reduce stray light to the surfaces of optical components | |
| DE4234962A1 | Closure device for a housing | |
| DE4133844A1 | TRIPLET TYPE LENS | |
| DE4106534A1 | System of telephoto lenses | |
| DE4006388A1 | Photographic lens with a built-in lens hood | |
| DE4005300A1 | CAMERA LENS | |
| ATA278789A | Binocular scope | |
| DE3936379A1 | SLIDE PROJECTOR FOR SUBJECT MAGAZINE | |
| DE3830620A1 | Binocular telescope |