Patent Number: 6,253,698

Title: Phosphorescent marine products

Abstract: In one embodiment of the invention, a marine article of the invention includes a phosphorescent phosphor. A particularly advantageous phosphorescent phosphor comprises MAl.sub.2 O.sub.4. As used herein, "M" is at least one cation selected from a group consisting of calcium, strontium, and barium. The phosphor comprises 0.001% to 10% of a europium activator, and 0.001% to 10% of at least one dopant selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, tin and bismuth as a co-activator, in terms of mol % relative to the metal element expressed by M. The phosphorescent marine article has an afterglow corresponding to a luminance of at least 0.3 mCd/m.sup.2 for at least 420 minutes.

Inventors: Goedel; John R. (Eden Prairie, MN)

Assignee: MarineGlo Corporation

International Classification: B63B 45/04 (20060101); B63B 45/00 (20060101); B63B 021/04 ()

Expiration Date: 07/03/2018