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Official data from INPI

PROCESSO PARA A PREPARACAO DE ESTER ETILICO DE ACIDO ACETICO

Em AnáliseInvention Patent

Application data

Number

PI7606810

Type

Invention Patent

Filing

10/14/1975

Publication

-

Progress at the INPI

  1. Filing10/14/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/09/82
  6. Terminated05/21/85

The patent was granted on 03/09/1982 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: 05/21/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOECHST AG

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Inventors

A. H. (pessoa física)

L. E. (pessoa física)

R. A. (pessoa física)

S. E. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/21/1985

RPI 761

Cessão de direito de exploração

#22.1

11/20/1984

RPI 735

16.3

04/27/1982

RPI 601

Concessão da patente

#16.1

03/09/1982

RPI 594

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