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Official data from INPI

SISTEMA COMBINADO PARA SECAGEM DE MATERIAIS ÚMIDOS E GASEIFICAÇÃO DE UM COMBUSTÍVEL FÓSSIL.

ConcedidaInvention Patent

Application data

Number

PI8303770

Type

Invention Patent

Filing

07/14/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing07/14/83
  2. Publication04/24/84
  3. Examination08/05/86
  4. Allowance08/11/87
  5. Grant03/29/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CPC International Inc.

US

See this company's full portfolio

Inventors

C. A. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

82 21593 · 07/26/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Republicação - classificação IPC

#15.11

07/07/1987

RPI 872

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

09/20/1983

RPI 674

Carta-patente expirada

#21.1

Patente extinta em 14/07/98

07/01/2008

RPI 1956

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