Title: Unitary porous themoplastic writing nib

Abstract: A process is provided to form spherical thermoplastic particles that involves dispersing a thermoplastic powder in a liquid that is a partial solvent for the thermoplastic, breaking the dispersion into droplets, forming thermoplastic spheres by heating the droplets to a temperature sufficient to at least partially solubilize the thermoplastic and to evaporate the solvent. Unique products, including porous structures, may be produced from material formed by this process.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Dickey, Clarence A. (Atlanta, GA, US)
McDaniel, John E. (Fairburn, GA, US)

Application Number: 463308
Filing Date: 1974-04-23
Publication_date: 1976-03-09
Assignee: Glasrock Products, Inc. (Atlanta, GA)
Primary Class(es): 401/198 401/215, 428/402, 428/421, 521/87, 521/131, 521/919
Other Classes:
US Patent Ref:

3022542	Feb, 1962	Davis	401/198.
3397938	Aug, 1968	Juelss	401/198.
3540914	Nov, 1970	Lin	428/306.
3558392	Jan, 1971	Goodenow et al.	401/198.
3558582	Jan, 1971	Bacskai	161/189.

Other Refs:
Primary Examiner: Ansher, Harold
Assistant Examiner: Ives, Patricia C.
Attorney: Lane, Aitken, Dunner & Ziems