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Official data from INPI

JUNÇÃO ACOPLADORA DESENGATÁVEL.

ConcedidaInvention Patent

Application data

Number

PI8104604

Type

Invention Patent

Filing

07/17/1981

Publication

04/06/1982

Progress at the INPI

  1. Filing07/17/81
  2. Publication04/06/82
  3. Examination08/10/82
  4. Allowance01/02/85
  5. Grant06/25/85
  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.

Talk to a specialist

Latest action published by the INPI: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Oilfield Divers, Inc

US

Inventors

M. E. (pessoa física)

Technical data

IPC Classification

Priority claims

US

8104604 · 07/17/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

04/23/1985

RPI 757

Deferimento

#9.1

01/02/1985

RPI 741

14.4

09/04/1984

RPI 724

14.1

07/10/1984

RPI 716

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Publicação do pedido de patente

#3.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

Pedido de licença compulsória

#20.1

10/15/1991

RPI 1089

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