Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5729097 | Method and device for controlling electric discharge lamps with electronic fluorescent lamp ballasts | — | 1998-03-17 |
| 5579392 | Duplicating and ciphering device and methods for codification of facsimile telecopies | — | 1996-11-26 |
| D368144 | Compact fluorescent lamp | — | 1996-03-19 |
| 5451756 | Process and equipment for counterfeit-proof operation of gambling machines with chip cards | Ingo Sausmekat | 1995-09-19 |
| 5282684 | Device for monitoring the temperature of cooled or deep-frozen products | — | 1994-02-01 |
| 5267794 | Process for the production of an indicator for monitoring the temperature of a cooled or deep-frozen product, and a method for using the indicator | — | 1993-12-07 |
| 5243256 | Gas discharge basin for compact lamps | — | 1993-09-07 |
| 5173340 | Method of coating a base of a gold alloy of at least 22 carat purity with a coating which is also of at least 22 carat purity | — | 1992-12-22 |
| 5135162 | Process and equipment designed to control a burner for heating systems | — | 1992-08-04 |
| 5128590 | Compact fluorescent lamp | — | 1992-07-07 |
| 5102233 | Indicator for monitoring and temperature control of frozen products | Ingeborg Staerk | 1992-04-07 |
| 5056493 | Environmentally harmonious fuel tank | — | 1991-10-15 |
| 5040378 | No frost cooling process for a cooling range above zero degrees Celsius | — | 1991-08-20 |
| 5026343 | Device for needleless hypodermic injection of medications | — | 1991-06-25 |
| 4998827 | Cold indicator for controlling the cooling or freezing of foods, medicines and the like | — | 1991-03-12 |
| 4987038 | Fine gold articles | — | 1991-01-22 |
| 4951446 | Method for making foil packaging | — | 1990-08-28 |
| 4941425 | Method and device for temperature indication of frozen products | — | 1990-07-17 |
| 4901779 | Safety tire assembly for vehicle | — | 1990-02-20 |
| 4836543 | Tennis racquet frame | — | 1989-06-06 |
| 4768557 | Procedure and device for the operation of water mixer unit | — | 1988-09-06 |
| 4727906 | Gripless water mixer unit | — | 1988-03-01 |
| 4718430 | Procedure and device for the administering of insulin or similar long-term medicaments | — | 1988-01-12 |
| 4660172 | Storage medium for electronic data processing | — | 1987-04-21 |
| 4595451 | Process and apparatus for etching printed circuit boards | — | 1986-06-17 |