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Official data from INPI

PROCESSO DE TESTAR UM MATERIAL VISCOELÁSTICO, APARELHO PARA TESTAR AS PROPRIEDADES REOLÓGICAS DE MATERIAL VISCOELÁSTICO E MATRIZ

ConcedidaInvention Patent

Application data

Number

PI8103430

Type

Invention Patent

Filing

06/01/1981

Publication

02/24/1982

Progress at the INPI

  1. Filing06/01/81
  2. Publication02/24/82
  3. Examination06/29/82
  4. Allowance07/10/84
  5. Grant01/29/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 01/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Monsanto Company

US

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Inventors

D. M. (pessoa física)

R. L. (pessoa física)

S. R. (pessoa física)

W. E. (pessoa física)

Technical data

IPC Classification

Priority claims

US

155.883 · 06/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/29/1985

RPI 745

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

07/10/1984

RPI 716

Solicitação de exame técnico

#4.1

06/29/1982

RPI 610

Publicação do pedido de patente

#3.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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