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Official data from INPI

BANDEJA E COLUNA DE CONTATO DE LIQUIDO-LIQUIDO

Em AnáliseInvention Patent

Application data

Number

PI7700376

Type

Invention Patent

Filing

01/23/1976

Publication

-

Progress at the INPI

  1. Filing01/23/76
  2. Publication
  3. Examination
  4. Allowance02/08/83
  5. Grant07/26/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 08/12/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNION CARBIDE CORP

See this company's full portfolio

Inventors

F. P. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

08/12/1986

RPI 825

Concessão da patente

#16.1

07/26/1983

RPI 666

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

Exigência - art. 36 da LPI

#6.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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