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Official data from INPI

PROCESSO PARA PURIFICAR ETANOL BRUTO PARA OBTER AZEÓTOPO ETANOL-ÁGUA SUBSTANCIAMENTE PURO

ConcedidaInvention Patent

Application data

Number

PI8107897

Type

Invention Patent

Filing

12/04/1981

Publication

09/08/1982

Progress at the INPI

  1. Filing12/04/81
  2. Publication09/08/82
  3. Examination10/02/84
  4. Allowance03/31/87
  5. Grant09/29/87
  6. Terminated02/04/92

The patent was granted on 09/29/1987 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BP Chemicals Limited

GB

See this company's full portfolio

Inventors

F. R. (pessoa física)

W. T. (pessoa física)

Technical data

Priority claims

GB

80 39196 · 12/06/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Notificação para pagamento de retribuição

#13.1

08/11/1987

RPI 877

Deferimento

#9.1

03/31/1987

RPI 858

Exigência - art. 36 da LPI

#6.1

06/03/1986

RPI 815

Pedido de certificado de adição de invenção

#5.1

03/05/1985

RPI 750

Solicitação de exame técnico

#4.1

10/02/1984

RPI 728

Publicação do pedido de patente

#3.1

09/08/1982

RPI 620

Pedido de patente depositado

#2.1

01/26/1982

RPI 588

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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