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Official data from INPI

PROCESSO PARA PREPARAR ACIDO TEREFTALICO

Em AnáliseInvention Patent

Application data

Number

PI7906733

Type

Invention Patent

Filing

10/19/1978

Publication

-

Progress at the INPI

  1. Filing10/19/78
  2. Publication
  3. Examination04/13/82
  4. Allowance04/19/83
  5. Grant10/25/83
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. I. (pessoa física)

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Inventors

H. S. (pessoa física)

H. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

10/25/1988

RPI 940

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

09/06/1983

RPI 672

Deferimento

#9.1

04/19/1983

RPI 652

Solicitação de exame técnico

#4.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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