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Official data from INPI

PROCESSO PARA PRODUCAO DE UM LATEX COAGULADO E APARELHO PARA O MESMO

ConcedidaInvention Patent
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Application data

Number

PI8206671

Type

Invention Patent

Filing

11/19/1981

Publication

10/04/1983
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Progress at the INPI

  1. Filing11/19/81
  2. Publication10/04/83
  3. Examination02/20/85
  4. Allowance10/29/86
  5. Grant07/28/87
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KANEGAFUCHI CHEMICAL IND [JP]

Inventors

M. Y. (pessoa física)

Y. H. (pessoa física)

Technical data

IPC Classification

C08C 1/14

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

03/31/1987

RPI 858

Deferimento

#9.1

10/29/1986

RPI 836

Exigência - art. 36 da LPI

#6.1

10/22/1985

RPI 783

Solicitação de exame técnico

#4.1

02/20/1985

RPI 748

Publicação do pedido de patente

#3.1

10/04/1983

RPI 676

Pedido de patente depositado

#2.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

Patente extinta em 18/11/97

08/19/2008

RPI 1963

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