Official data from INPI

MATERIAL DE FRICCAO E PROCESSO PARA FABRICA-LO

DeferidaInvention Patent

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Application data

Number

PI7805297

Type

Invention Patent

Filing

08/18/1977

Publication

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Progress at the INPI

Filing08/18/77
Publication
Examination
Allowance05/17/88
Grant
Expired05/03/94

The letters patent expired on 05/03/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

RAYBESTOS MANHATTAN INC

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

05/17/1988

RPI 917

Exigência - art. 36 da LPI

#6.1

09/15/1987

RPI 882

6.2

10/20/1981

RPI 574

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

From the same holder

PROCESSO PARA MELHORAR A DISPENSABILIDADE EM AGUA DE FIBRAS CERAMICAS E FIBRA CERAMICA DE OXIDO DE METAL POLICRISTALINO DISPERSAVEL EM AGUA

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