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Official data from INPI

INVOLUCRO TUBULAR ALONGADO CONTENDO FEIXE DE FIBRAS OCAS E RESPECTIVO PROCESSO DE ENVOLVIMENTO DAS EXTREMIDADES DO FEIXE

ConcedidaInvention Patent

Application data

Number

PI7901523

Type

Invention Patent

Filing

03/20/1978

Publication

-

Progress at the INPI

  1. Filing03/20/78
  2. Publication
  3. Examination
  4. Allowance04/06/82
  5. Grant12/14/82
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 12/14/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. L. (pessoa física)

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Inventors

B. B. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/14/1982

RPI 634

Notificação para pagamento de retribuição

#13.1

07/27/1982

RPI 614

Deferimento

#9.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

20.4

01/09/1990

RPI 1001

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