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Official data from INPI

Amortecedor pneumático.

ConcedidaInvention Patent
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Application data

Number

PI8103418

Type

Invention Patent

Filing

05/27/1981

Publication

01/04/1983
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Progress at the INPI

  1. Filing05/27/81
  2. Publication01/04/83
  3. Examination06/07/83
  4. Allowance06/11/85
  5. Grant12/31/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Indústrias Villares S/A

SP, BR

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Inventors

P. H. (pessoa física)

Technical data

IPC Classification

C09B 1/503

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/24/1985

RPI 779

Deferimento

#9.1

06/11/1985

RPI 764

Exigência - art. 36 da LPI

#6.1

10/09/1984

RPI 729

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Publicação do pedido de patente

#3.1

01/04/1983

RPI 637

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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