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Official data from INPI

PROCESSO DE TESTAR UMA AMOSTRA DE MATERIAL VISCOELÁSTICA E APARELHO PARA MEDIR PROPRIEDADES DE UM MATERIAL VISCOELÁSTICO

ConcedidaInvention Patent

Application data

Number

PI8404434

Type

Invention Patent

Filing

09/05/1984

Publication

07/30/1985

Progress at the INPI

  1. Filing09/05/84
  2. Publication07/30/85
  3. Examination08/18/87
  4. Allowance01/10/89
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Monsanto Company

US

See this company's full portfolio

Inventors

D. K. (pessoa física)

H. P. (pessoa física)

R. B. (pessoa física)

Technical data

IPC Classification

Priority claims

US

529.255 · 09/06/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/10/1989

RPI 951

Exigência - art. 36 da LPI

#6.1

05/31/1988

RPI 919

Solicitação de exame técnico

#4.1

08/18/1987

RPI 878

Publicação do pedido de patente

#3.1

07/30/1985

RPI 771

Pedido de patente depositado

#2.1

11/13/1984

RPI 734

Carta-patente expirada

#21.1

Patente extinta em 05/09/99

07/08/2008

RPI 1957

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