Official data from INPI

PROCESSO E APARELHO PARA MANUFATURA DE FIBRAS DE VIDRO

ConcedidaInvention Patent

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Application data

Number

PI7500087

Type

Invention Patent

Filing

08/26/1974

Publication

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Progress at the INPI

Filing08/26/74
Publication
Examination
Allowance
Grant12/29/87
Expired10/26/93

The letters patent expired on 10/26/1993: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STRICKLAND E

Inventors

S. E. (pessoa física)

Technical data

IPC Classification

C03B 37/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

110

10/06/1987

RPI 885

Recurso

#12.1

05/24/1983

RPI 657

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

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