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Official data from INPI

APERFEIÇOAMENTO EM COMPOSIÇÃO PROTETORA DE VEDAÇÃO

Em ExigênciaInvention Patent

Application data

Number

PI8006992

Type

Invention Patent

Filing

10/30/1980

Publication

-

Progress at the INPI

  1. Filing10/30/80
  2. Publication
  3. Examination10/06/81
  4. Allowance09/25/90
  5. Grant03/26/91
  6. Expired11/21/95

The letters patent expired on 11/21/1995: 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. I. (pessoa física)

US

See this company's full portfolio

Inventors

W. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

90.855 · 11/02/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

09/27/1988

RPI 936

Exigência - art. 36 da LPI

#6.1

06/21/1988

RPI 922

6.2

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

11/21/1995

RPI 1303

Republicação - classificação IPC

#15.11

04/16/1991

RPI 1063

Concessão da patente

#16.1

03/26/1991

RPI 1060

Notificação para pagamento de retribuição

#13.1

01/08/1991

RPI 1049

Deferimento

#9.1

09/25/1990

RPI 1034

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