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Official data from INPI

PROCESSO PARA PRODUZIR ETANOL ABSOLUTO

ConcedidaInvention Patent
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Application data

Number

PI7804408

Type

Invention Patent

Filing

07/08/1977

Publication

-
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Progress at the INPI

  1. Filing07/08/77
  2. Publication
  3. Examination
  4. Allowance12/29/87
  5. Grant06/28/88
  6. Expired11/30/93

The letters patent expired on 11/30/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. K. (pessoa física)

Inventors

S. K. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

C07C 31/08C12P 7/02C12P 7/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Republicação - classificação IPC

#15.11

02/09/1988

RPI 903

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

04/01/1986

RPI 806

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

6.2

10/13/1981

RPI 573

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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