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Official data from INPI

PROCESSO PARA CONVERTER MATERIAIS DE CARGA CELULOSICOS EM UM COMBUSTIVEL SOLIDO UTIL,BEM COMO COMBUSTIVEL LIQUIDO COMPREENDENDO O DITO COMBUSTIVEL SOLIDO

ConcedidaInvention Patent

Application data

Number

PI7805847

Type

Invention Patent

Filing

09/07/1977

Publication

-

Progress at the INPI

  1. Filing09/07/77
  2. Publication
  3. Examination
  4. Allowance08/10/82
  5. Grant02/22/83
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. E. (pessoa física)

Inventors

K. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/28/1982

RPI 636

15.0

08/10/1982

RPI 616

Deferimento

#9.1

08/10/1982

RPI 616

6.2

10/20/1981

RPI 574

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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