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Official data from INPI

PROCESSO DE RETIRAR GAS DE ATERRO E PROCESSO DE ESTABELECER UMA RAZAO DE PRODUCAO MAXIMA EM QUE O GAS DE ATERRO PODE SER REMOVIDO DE UM ATERRO

Em AnáliseInvention Patent

Application data

Number

PI7702697

Type

Invention Patent

Filing

04/28/1977

Publication

-

Progress at the INPI

  1. Filing04/28/77
  2. Publication
  3. Examination
  4. Allowance02/09/82
  5. Grant
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 02/09/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

RESERVE SYNTHETIC FUELS INC

Inventors

No inventors listed.

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

15.0

02/09/1982

RPI 590

Deferimento

#9.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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