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Official data from INPI

APERFEIÇOAMENTOS EM FÔRMAS DE GELO

PublicadaInvention Patent

Application data

Number

PI8706523

Type

Invention Patent

Filing

12/02/1987

Publication

06/20/1989

Progress at the INPI

  1. Filing12/02/87
  2. Publication06/20/89
  3. Examination01/16/90
  4. Allowance07/16/91
  5. Grant08/25/92
  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.

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Latest action published by the INPI: 06/20/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sociedade Técnica de Elastomeros Stela Ltda.

SP, BR

See this company's full portfolio

Inventors

J. P. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

06/20/1989

RPI 974

Pedido de patente depositado

#2.1

03/29/1988

RPI 910

Carta-patente expirada

#21.1

Patente extinta em 02/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/25/1992

RPI 1134

Notificação para pagamento de retribuição

#13.1

11/12/1991

RPI 1093

Deferimento

#9.1

07/16/1991

RPI 1076

Solicitação de exame técnico

#4.1

01/16/1990

RPI 1002

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