Search Results for: Paper sheets
(class / ) having variation in thickness (class / ) nonplanar uniform thickness or nonlinear uniform diameter (e.g., l-shape) (class / ) mass of only fibers (class / ) foil or filament smaller than mils (class / ) embodying fibers interengaged or between layers (e.g., paper, etc.)
(class / ) physical properties (e.g., dimensions, optical, smoothness, etc.) of support specified (class / ) paper support composition specified (class / ) specified property (e.g., antistatic, anticurl, adhesive, antifriction, etc.) of backing layer (class / ) terpolymer ink receptive layer (class /...
https://patents.justia.com/patents-by-us-classification/428
the ancient egyptians used papyrus to make paper, baskets, sandals, mats, rope, blankets, tables, chairs, mattresses, medicine, perfume, food, and clothes. truly, papyrus was an important "gift of the nile". they even tried to make boats out of papyrus, but that did not work very well. papyrus absorbs
water. boats made of papyrus would become waterlogged and sink. using papyrus to make boats might not have worked, but making paper out of papyrus worked very well. the ancient egyptians soaked papyrus to soften it, and then mashed it. they pushed the mashed papyrus together into sheets, and let the...
https://egypt.mrdonn.org/papyrus.html