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Official data from INPI

PROCESSO DE DESTILACAO PARA A PRODUCAO DE ALCOOL ANIDRO

ConcedidaInvention Patent

Application data

Number

PI8102321

Type

Invention Patent

Filing

04/17/1980

Publication

12/08/1981

Progress at the INPI

  1. Filing04/17/80
  2. Publication12/08/81
  3. Examination12/07/82
  4. Allowance10/13/87
  5. Grant04/26/88
  6. Terminated02/04/92

The patent was granted on 04/26/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STONE & WEBSTER ENG CORP

Inventors

D. R. (pessoa física)

R. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/13/1987

RPI 886

Exigência - art. 36 da LPI

#6.1

11/20/1984

RPI 735

Solicitação de exame técnico

#4.1

12/07/1982

RPI 633

14.7

04/13/1982

RPI 599

Publicação do pedido de patente

#3.1

12/08/1981

RPI 581

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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