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Official data from INPI

COMPOSICAO PARA A DISPERSAO DE PRODUTOS QUIMICOS CRITICOS;LIGANTE;E PROCESSO PARA PREPARACAO DE UM LIGANTE PARA ENCAPSULAR PRODUTOS QUIMICOS CRITICOS A SEREM DISPERSADOS EM BORRACHA OU COMPOSTO QUIMICO

ConcedidaInvention Patent
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Application data

Number

PI7704985

Type

Invention Patent

Filing

07/30/1976

Publication

-
View on INPI

Progress at the INPI

  1. Filing07/30/76
  2. Publication
  3. Examination
  4. Allowance07/14/87
  5. Grant12/29/87
  6. Terminated10/23/90

The patent was granted on 12/29/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WYROUGH & LOSER

Inventors

L. T. (pessoa física)

R. M. (pessoa física)

Technical data

IPC Classification

C08J 3/00C08K 9/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Exigência - art. 36 da LPI

#6.1

08/03/1982

RPI 615

Anuidade - prazo legal encerrado

#18.2

10/23/1990

RPI 1038

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