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US 7,056,860 B2Granted
Print protection, embedded print protected page, embedded text page, embedded text kit, and methods relating thereto
OwnerKenneth R Tetraultinventor
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Abstract
As a writing surface, the invention provides a waterproof solid sheet that has been formed from a polyvinyl chloride and that has at least one writing face that receives controllably semi-permanent ink writing. The writing is only controllably removable from the writing face by a remover-solvent; upon removal of the writing, the writing face is left writing-free and residue-free. The writing surface otherwise resists adverse conditions.
Claims12
A writing kit, comprising:
- (1) a re-usable writing surface, consisting essentially of:
- a waterproof solid sheet of thickness about 14 mils (0.014 inches) that has been formed from a polyvinyl chloride and that has at least one writing face that receives a waterproof, controllably semi-permanent ink writing removable from the writing face by a pre-selected remover-solvent
- (2) a controllably semi-permanent ink for writing the waterproof, controllably semi-permanent ink writing on the surface, and
- (3) the remover-solvent;
- wherein the remover-solvent fully removes the waterproof, controllably semi-permanent ink writing, leaving the writing face writing-free and residue-free.
2 more elements
Dependencies are inferred from the claim text.