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Official data from INPI

COMPOSICAO DE VEDACAO DE RESISTOR DE FASE-VIDRO E VELA DE IGNICAO

Em AnáliseInvention Patent
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Application data

Number

PI7803200

Type

Invention Patent

Filing

05/20/1977

Publication

-
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Progress at the INPI

  1. Filing05/20/77
  2. Publication
  3. Examination
  4. Allowance01/03/84
  5. Grant06/26/84
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 04/02/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GEN MOTORS CORP

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Inventors

K. P. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

C03C 3/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/24/1984

RPI 705

Deferimento

#9.1

01/03/1984

RPI 689

Republicação - classificação IPC

#15.11

02/22/1983

RPI 644

Exigência - art. 36 da LPI

#6.1

01/11/1983

RPI 638

6.2

12/29/1981

RPI 584

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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