Official data from INPI

PROCESSO PARA A OBTENCAO DE ESPUMAS ALTAMENTE ELASTICAS,DE CELULAS ABERTAS,APRESENTANDO GRUPOS URETANO

ConcedidaInvention Patent

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Application data

Number

PI7705585

Type

Invention Patent

Filing

08/23/1976

Publication

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Progress at the INPI

Filing08/23/76
Publication
Examination
Allowance11/16/82
Grant05/31/83
Expired07/13/93

The letters patent expired on 07/13/1993: 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOLDSCHMIDT AG TH

Inventors

K. H. (pessoa física)

R. G. (pessoa física)

Technical data

IPC Classification

C08G 18/14 C08G 18/40

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

03/22/1983

RPI 648

Deferimento

#9.1

11/16/1982

RPI 630

Exigência - art. 36 da LPI

#6.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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