Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE COMPOSIÇÕES POLÍMERAS COMPATIBILIZADAS

ConcedidaInvention Patent

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Application data

Number

PI8101341

Type

Invention Patent

Filing

03/09/1981

Publication

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Progress at the INPI

Filing03/09/81
Publication
Examination02/02/82
Allowance08/06/85
Grant03/25/86
Expired09/24/96

The letters patent expired on 09/24/1996: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aduance Elastomer Systems, LP.

Inventors

A. C. (pessoa física)

R. P. (pessoa física)

Technical data

IPC Classification

C08F 299/00 C08L 23/02 C08L 35/04

Priority claims

128.704 · 03/10/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/10/1985

RPI 790

Deferimento

#9.1

08/06/1985

RPI 772

Exigência - art. 36 da LPI

#6.1

05/29/1984

RPI 710

Solicitação de exame técnico

#4.1

02/02/1982

RPI 589

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

Pedido de licença compulsória

#20.1

10/15/1991

RPI 1089

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