Method of manufacturing synthetic leather

Assignee: Toyo Tire Corp

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Filing: 1969-09-11

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Granted: 1971-06-22

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Expires: 1989-09-11

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Abstract

Abstract PROCESS FOR PREPARING SYNTHETIC LEATHER BY COATING A FIBROUS SUBSTRATE WITH A COMPOSITION CONSISTING OF POLYURETHANE-UREA POLYMER SOLUTION, AN INORGANIC COMPOUND SUCH AS LIGHT CALCIUM CARBONATE, MAGNESIUM CARBONATE, FINE PARTICLE CLAY, HYDROUS SILICATE AND ZINC OXIDE HAVING A PARTICLE SIZE OF 40 MU-2U AS NUCLEI INGREDIENT AND FROM 2-6% BY WEIGHT BASED ON THE POLYMER SOLVENT OF A LIQUID MISCIBLE WITH THE POLYMER SOLVENT BUT INCAPABLE OF DISSOLVING THE POLYMER, COAGULATING THE POLYMER AND EXTRACTING THE SOLVENT FROM THE RESULTANT PRODUCT.

Inventors

👤 Ichiro Minobe
👤 Takashi Suzuki

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-24 09:03

CPC Classifications

C; C08; C08J; C08J9/00; C08J9/28; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06; D06N; D06N3/00; D06N3/0043; D06N3/0052; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249986; Y10T428/249994; Y10T442/00; Y10T442/20; Y10T442/2139; Y10T442/2148

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-06-21	1974-12-21	1975-06-22	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-06-21	1978-12-21	1979-06-22	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-06-21	1982-12-21	1983-06-22	$7700.00	Window Closed / Lapsed

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