Rolff; Randolf
Patent Applications and Registrations
Patent applications and USPTO patent grants for Rolff; Randolf.The latest application filed is for "gas leak search using a test gas spray device".
- Rolff; Randolf - Cologne DE
- Rolff; Randolf - Koeln DE
- Rolff; Randolf - Kerpen-Horrem N/A DE
- Rolff; Randolf - Kerpen DE
- Rolff; Randolf - Kergen-Horrem DE
- Rolff; Randolf - Korpen-Horrem DE
| Patent | Date |
|---|---|
| Gas leak search using a test gas spray device Grant 10,837,857 - Bruhns , et al. November 17, 2 | 2020-11-17 |
| Gas Leak Search Using a Test Gas Spray Device App 20190120715 - Bruhns; Hjalmar ; et al. | 2019-04-25 |
| Method for functionally testing a leak detector Grant 8,850,866 - Rolff October 7, 2 | 2014-10-07 |
| Sniffing leak detector Grant 8,537,019 - Rolff , et al. September 17, 2 | 2013-09-17 |
| Sniffing probe Grant 8,416,091 - Rolff , et al. April 9, 2 | 2013-04-09 |
| Leak detector with a leak detector testing device Grant 8,117,886 - Rolff , et al. February 21, 2 | 2012-02-21 |
| Method For Functionally Testing A Leak Detector App 20120031162 - Rolff; Randolf | 2012-02-09 |
| Method and device for detecting leaks Grant 7,802,461 - Liebich , et al. September 28, 2 | 2010-09-28 |
| Sniffing Leak Detector App 20090212960 - Rolff; Randolf ; et al. | 2009-08-27 |
| Leak Detector App 20090188302 - Rolff; Norbert ; et al. | 2009-07-30 |
| Method and device for detecting leaks App 20090013766 - Liebich; Jorn ; et al. | 2009-01-15 |
| Leak indicator with test leak and test leak for integration into a leak detector Grant 7,444,854 - Bohm , et al. November 4, 2 | 2008-11-04 |
| Sniffing Probe App 20080223112 - Rolff; Randolf ; et al. | 2008-09-18 |
| Leak rate measuring device Grant 7,331,216 - Gerdau , et al. February 19, 2 | 2008-02-19 |
| Leak indicator with test leak and test leak for integration into a leak detector App 20070039377 - Bohm; Thomas ; et al. | 2007-02-22 |
| Reference leakage device for leak sniffer detector Grant 7,168,287 - Rolff January 30, 2 | 2007-01-30 |
| Leak rate measuring device App 20060283235 - Gerdau; Ludolf ; et al. | 2006-12-21 |
| Leak indicator with test leak and test leak for integration into a leak indicator Grant 7,107,821 - Bohm , et al. September 19, 2 | 2006-09-19 |
| Reference leakage device for leak sniffer detector App 20060150707 - Rolff; Randolf | 2006-07-13 |
| Method for detecting a gas using an infrared gas analyser and gas analyser suitable for carrying out said method Grant 7,030,381 - Kilian , et al. April 18, 2 | 2006-04-18 |
| Leak indicator with test leak and test leak for integration into a leak indicator App 20040139787 - Bohm, Thomas ; et al. | 2004-07-22 |
| Method for detecting a gas using an infrared gas analyser and gas analyser suitable for carrying out said method App 20040051043 - Kilian, Ralf ; et al. | 2004-03-18 |
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