United States Patent im Barboza et al. [ii] Patent Number: [45] Date of Patent: 5733581 Mar. 31, 1998 [54] APPARATUS FOR MAKING MELT-BLOWN FILTRATION MEDIA ...

■■Illllllllllll US005681469A United States Patent [19] [ii] Patent Number: 5681469 Barboza et al. [45] Date of Patent: Oct. 28, ...

IILIIIIIIIIIIIIIIIIIIINII Hill 111 US005591335A United States Patent [19] [ii] Patent Number: 5591335 Barboza et al. [45] Date of Patent: Jan.

United States Patent im Mozelack et al. US005653833A [li] Patent Number: [45] Date of Patent: 5653833 Aug. 5, 1997 [54] METHOD FOR INTEGRALLY JOINING ...

... 15 Pat. No. 4212742 to Solomon et al. which is hereby incorporated by relerence. The membranes ol the invention, have the ability to retain red blood ...

United States Patent m Toon [54] STAINLESS STEEL YARN AND PROTECTIVE GARMENTS [ 75] Inventor: John J. Toon, South Daytona, Fla. [73] Assignee: Memtec America ...

ultra-high molecular weight polyolefins, such as Spectra (§). These materials add to the cut and abrasion resistance of the composite yarns of the invention ...

7B [54] METHOD FOR INTEGRALLY JOINING PREFORMED THERMOPLASTIC ELEMENTS BY FRICTION WELDING [75] Inventors: Brian Mozelack, White Hall, Md.; Robert D. Connor ...