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Official data from INPI

PROCESSO APERFEIÇOADO PARA DEPOSIÇÃO SOBRE ALUMÍNIO E SUAS LIGAS

ConcedidaInvention Patent

Application data

Number

PI7807322

Type

Invention Patent

Filing

11/07/1978

Publication

-

Progress at the INPI

  1. Filing11/07/78
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/26/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M & T Chemicals Inc.

US

See this company's full portfolio

Inventors

J. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

749.633 · 11/08/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1983

RPI 666

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Exigência - art. 36 da LPI

#6.1

05/11/1982

RPI 603

6.2

12/29/1981

RPI 584

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C25D; C25D 3/56.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

20.4

04/28/1992

RPI 1117

Pedido de licença compulsória

#20.1

04/21/1992

RPI 1116

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