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Bad-Vilbel, Germany

Siegmund Hflm Babendererde

USPTO Granted Patents = 18

Average Co-Inventor Count = 2.3

ph-index = 5

Forward Citations = 94(Granted Patents)

Location History:

Munich, DE (1977)
6868 Bad Vilbel, DE (1979)
Bad Vilbel, DE (1977 - 1990)
Lubeck-Travemunde, DE (1989 - 1990)

Company Filing History:

Hochtief Aktiengesellschaft Vorm. Gebr.helfmann

Gewerkschaft Eisenhutte Westfalia, Gmbh

4. 1 out of 832,718

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patents

where one patent can have more than one assignee

Years Active: 1977-1990

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4911578 - Process for making a tunnel and advancing a tunneling read with a (1990-03-27),

2. 4909668 - Movable sealing assembly for tunneling machines (1990-03-20),

3. 4856936 - Form for concrete-placement tunnel lining (1989-08-15),

4. 4854776 - Process and apparatus for lining a tunnel with concrete (1989-08-08),

5. 4848963 - Earth pressure shield (1989-07-18),

6. 4844656 - Earth pressure shield (1989-07-04),

7. 4820458 - Process for continuously lining a tunnel with extruded concrete (1989-04-11),

8. 4789267 - Method of and apparatus for concrete tunnel lining (1988-12-06),

9. 4768898 - Process and apparatus for continuously lining a tunnel with extruded (1988-09-06),

10. 4687374 - Method of and apparatus for concrete tunnel lining (1987-08-18),

11. 4629255 - Tunneling machine (1986-12-16),

12. 4621947 - Method of and apparatus for the lining of a tunnel with concrete (1986-11-11),

13. 4140345 - Tunnel-excavating machine with shield formed of segments (1979-02-20),

14. 4068485 - Apparatus for driving tunnels or the like (1978-01-17),

15. 4048806 - Apparatus for, and a method of, driving tunnels (1977-09-20),

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