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Official data from INPI

PROCESSO E DISPOSITIVO APERFEICOADO PARA A PRODUCAO E MANUTENCAO DE UMA CAMADA DE TURBILHONANTE EM SISTEMAS HETEROGENEOS

Em AnáliseInvention Patent

Application data

Number

PI7602606

Type

Invention Patent

Filing

04/29/1975

Publication

-

Progress at the INPI

  1. Filing04/29/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Terminated05/10/88

The patent was granted on 12/29/1981 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: 05/10/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DYNAMIT NOBEL AG

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Inventors

S. G. (pessoa física)

S. H. (pessoa física)

V. H. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/10/1988

RPI 916

Pedido de licença compulsória

#20.1

11/11/1986

RPI 838

Concessão da patente

#16.1

12/29/1981

RPI 584

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