Official data from INPI

COMPOSIÇÃO DE POLIGLUTARIMIDA E COPOLÍMERO DE ESTIRENO-ACRILONITRILA

ConcedidaInvention Patent

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Application data

Number

PI8302422

Type

Invention Patent

Filing

05/09/1983

Publication

01/10/1984

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Progress at the INPI

Filing05/09/83
Publication01/10/84
Examination01/07/86
Allowance05/02/89
Grant10/24/89
Expired07/01/08

The letters patent expired on 07/01/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company

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Inventors

W. S. (pessoa física)

Technical data

IPC Classification

C08L 25/12 C08L 33/00

Priority claims

376,479 · 05/10/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

06/14/1988

RPI 921

Solicitação de exame técnico

#4.1

01/07/1986

RPI 794

Publicação do pedido de patente

#3.1

01/10/1984

RPI 690

Pedido de patente depositado

#2.1

06/28/1983

RPI 662

Carta-patente expirada

#21.1

Patente extinta em 09/05/98

07/01/2008

RPI 1956

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