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Official data from INPI

APERFEIÇOAMENTOS EM ENCHIMENTO DE CONTATO PARA TORRES DE RESFRIAMENTO.

Em AnáliseInvention Patent

Application data

Number

PI8702975

Type

Invention Patent

Filing

06/12/1987

Publication

03/07/1989

Progress at the INPI

  1. Filing06/12/87
  2. Publication03/07/89
  3. Examination10/31/89
  4. Allowance05/15/90
  5. Grant11/27/90
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alpina Equipamentos Industriais Ltda

SP, BR

See this company's full portfolio

Inventors

C. W. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/31/1989

RPI 993

Publicação do pedido de patente

#3.1

03/07/1989

RPI 959

Pedido de patente depositado

#2.1

08/18/1987

RPI 878

Carta-patente expirada

#21.1

Patente extinta em 12/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/27/1990

RPI 1043

Notificação para pagamento de retribuição

#13.1

08/21/1990

RPI 1029

Deferimento

#9.1

05/15/1990

RPI 1018

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