David Jon Rosenkrantz

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Emmaus, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Internal floating roof for covering fluid bodies in storage tanks
- Patent number 9,346,614
- Issue date May 24, 2016
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Rim space seal system for use with internal floating roof
- Patent number 8,727,161
- Issue date May 20, 2014
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Full contact floating roof
- Patent number 5,704,509
- Issue date Jan 6, 1998
- Allentech, Inc.
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Shoe seal for floating roof
- Patent number 5,372,270
- Issue date Dec 13, 1994
- Allentech, Inc.
- David J. Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
Internal Floating Roof for Covering Fluid Bodies in Storage Tanks
- Publication number 20140231431
- Publication date Aug 21, 2014
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
RIM SPACE SEAL SYSTEM FOR USE WITH INTERNAL FLOATING ROOF
- Publication number 20140091091
- Publication date Apr 3, 2014
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Internal Floating Roof for Covering Fluid Bodies in Storage Tanks
- Publication number 20130327773
- Publication date Dec 12, 2013
- David Jon Rosenkrantz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL