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Official data from INPI

CONEXÃO ROSCADA

DeferidaInvention Patent

Application data

Number

PI8506955

Type

Invention Patent

Filing

09/09/1985

Publication

12/23/1986

Progress at the INPI

  1. Filing09/09/85
  2. Publication12/23/86
  3. Examination02/23/88
  4. Allowance11/07/89
  5. Grant06/26/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hydril Company

US

See this company's full portfolio

Inventors

D. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

657.078 · 10/02/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

11/07/1989

RPI 994

Pedido de certificado de adição de invenção

#5.1

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

02/23/1988

RPI 905

Notificação de entrada na fase nacional - PCT

#1.3

12/23/1986

RPI 844

Carta-patente expirada

#21.1

Patente extinta em 09/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

03/13/1990

RPI 1009

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