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Official data from INPI

PROCESSO E APARELHO PARA RECUPERAR OS TEORES TÉRMICOS E QUÍMICO DE LICOR DE P OLPAÇÃO ESGOTADO

ConcedidaInvention Patent

Application data

Number

PI8304944

Type

Invention Patent

Filing

09/12/1983

Publication

09/04/1984

Progress at the INPI

  1. Filing09/12/83
  2. Publication09/04/84
  3. Examination10/21/86
  4. Allowance11/01/88
  5. Grant08/29/89
  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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

International Paper Company

US

See this company's full portfolio

Inventors

H. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

458.237 · 01/17/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

02/21/1989

RPI 957

Deferimento

#9.1

11/01/1988

RPI 941

Exigência - art. 36 da LPI

#6.1

04/19/1988

RPI 913

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

09/04/1984

RPI 724

Pedido de patente depositado

#2.1

11/08/1983

RPI 681

Carta-patente expirada

#21.1

Patente extinta em 12/09/98

07/01/2008

RPI 1956

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