Inventor
Alfred Hengst
Inventor
Lahnau, DE
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus58%
LOCD111%
A45CPurses5%
A45FTravelling or camp equipment: sacks or packs carried on the body5%
F16CShafts5%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them5%
LOC165%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
8,325,415'Binocular telescope'20127,330,310'Focusing device with diopter adjustment'20087,133,200'Method and device for focusing and diopter compensation of a telescope'20067,050,226'Play-free rotary mounting'20066,918,672'Arrangement for rotatable adjustment of a cap on an eyepiece housing'20056,779,899'Arrangement for rotatable adjustment of a cap on an eyepiece housing'2004D0384965'Camera housing'19975,630,254'Suspension lug and locking element for a carrying strap'19975,453,875'Monocular telescope having a focusing unit whose mechanical sensitivity can be varied'1995D0332106'Pair of binoculars'1992D0332107'Pair of binoculars'19924,998,357'Binocular telescopr with radially acting compensating spring'19914,989,963'Binocular telescope with coupled joint focusing and uncoupled separate focusing'1991D0292412'Binocular'1987D0287369'Binocular'1986D0272361'Binocular'1984D0272362'Binocular'19844,329,013'Binocular telescope with internal focusing'19824,183,075'Illumination system for photographic enlargers'19804,087,153'Binoculars with double hinge bridge and resilient biasing'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1987Patents assigned to LEITZ ERNST GMBH (7)· patent assignee history
1978–1992Based in Wetzlar-Dorlar, DT· patent location history
1980Based in Wetzlar, DE· patent location history
1984–2012Based in Lahnau, DE· patent location history
1991Patents assigned to LEICA GMBH (2)· patent assignee history
1992–1997Patents assigned to LEICA CAMERA GMBH (5)· patent assignee history
2004–2008Patents assigned to LEICA CAMERA AG (5)· patent assignee history
2012Patents assigned to HENGST ALFRED (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEITZ ERNST GMBH | 7 | 1978–1987 |
| LEICA CAMERA AG | 5 | 2004–2008 |
| LEICA CAMERA GMBH | 5 | 1992–1997 |
| LEICA GMBH | 2 | 1991 |
| HENGST ALFREDself | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lahnau, DE | 15 | 1984–2012 |
| Wetzlar-Dorlar, DT | 4 | 1978–1992 |
| Wetzlar, DE | 1 | 1980 |