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Official data from INPI

APERFEICOAMENTO EM EXPANSOR PARA BUCHA DE FIXACAO

Em AnáliseUtility Model
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Application data

Number

MU6100615

Type

Utility Model

Filing

05/12/1981

Publication

12/21/1982
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Progress at the INPI

  1. Filing05/12/81
  2. Publication12/21/82
  3. Examination09/06/83
  4. Allowance04/09/85
  5. Grant10/29/85
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MECANICA WALSYWA LTD [BR]

Inventors

C. C. (pessoa física)

C. N. (pessoa física)

Technical data

IPC Classification

F16B 13/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

07/28/1987

RPI 875

20.7

06/16/1987

RPI 869

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

07/30/1985

RPI 771

Deferimento

#9.1

04/09/1985

RPI 755

Exigência - art. 36 da LPI

#6.1

09/11/1984

RPI 725

Solicitação de exame técnico

#4.1

09/06/1983

RPI 672

Publicação do pedido de patente

#3.1

12/21/1982

RPI 635

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

20.7

05/08/1990

RPI 1017

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