Patents by Inventor Pierre Laurent

Pierre Laurent has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5339730
    Abstract: A method for printing and embossing sheets of paper made of cellulose wadding and with two or more plies, characterized in that one of the plies is directly printed on the embossing roller using one or more printing systems mounted on the embossing systems, and in that this ply is associated with another embossed and glue-sized ply to form a sheet in such manner that the print inks are located on the sheet's inner side between the two or more plies.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: August 23, 1994
    Assignee: Kaysersberg
    Inventors: Remy Ruppel, Joel Hungler, Pierre Laurent
  • Patent number: 5331526
    Abstract: The invention relates to a device for lighting and suspension of at least one hanging-rod (9), characterized in that it comprises a mounting member (1) adapted to be fixed against a wall (2) or a ceiling and at least a first sectional member constituting a cornice (3) having in cross-section a vertical portion (4) which forms at the upper end a cavity (5) for hooking onto said mounting member (1) and at the lower end a nose (6) for receiving the raised end (7) of a support (8) which may be provided for a hanging-rod and for horizontal stabilization by means of a couple exerted between said mounting member (1) and said hanging-rod support (8), and a portion (10) having a horizontal tendency and of concave shape towards said upper end of the vertical portion (4) and provided with first means for supplying electric current to at least a first light source (38), a proximal extremity (13) of said horizontal-tendency portion (10) being intended to constitute a vertical bearing surface for said raised end (7) of the
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: July 19, 1994
    Assignee: Zebulon
    Inventors: Alain Girot, Bruno Houssin, Pierre-Laurent Martin
  • Patent number: 5257936
    Abstract: Completely inert training grenade intended to be fired by a rifle and a propellant cartridge, comprising a metal tube (1) equipped with a rear stabilizing tail unit (2) and with a front solid part (3) which closes off the tube. This front part (3) carries a hollow nose (4) containing a marking substance (5), this nose (4) being fastened removably by engagement to the front solid part (3) of the tube. The nose (4) is sufficiently resistant to withstand the shot, but is destructible on impact. The solid front part (3) of the tube is produced in one piece with the tube, the diameter of this part being substantially equal to or slightly larger than that of the rest of the tube. The nose (4) engaged on this solid front part has an inner annular shoulder (11) bearing on the front surface (3a) of the solid part (3) of the tube, and the front end of the nose (4) is flat. The nose (4) is shaped so that its wall can break in the event of its impact on the ground.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: November 2, 1993
    Assignee: Luchaire Defense S.A.
    Inventors: Francois Ambrosi, Pierre Laurent, Thierry Dupre
  • Patent number: 5173351
    Abstract: A combined sheet material including at least two absorbent sheets, such as of cellulose-cotton, each having a density of between from 10 to 40 g/m.sup.2. Each of the sheets is separately embossed by calendaring them into a pattern of protuberances distributed in a first pitch along a first direction for each sheet (P.sub.1 sm, P.sub.2 sm) and in a second pitch in a second direction for each sheet (P.sub.1 st, P.sub.2 st) which subtends the first direction at an angle other than zero. The end of the protuberances extending away from the plane of each of the sheets includes a flat bonding element whereby the two sheets are bonded to each other, preferably by gluing. The pattern of each of the sheets is characterized in that the first pitch of each sheet along the first direction is different and related by the equation..vertline.1/P.sub.1 sm-1/P.sub.2 sm.vertline..gtoreq.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: December 22, 1992
    Assignee: Kaysersberg, S.A.
    Inventors: Remy Ruppel, Pierre Laurent, Joel Hungler
  • Patent number: 5049559
    Abstract: The invention relates to thieno-triazolo-diazepine derivatives of the formula ##STR1## wherein Y stands for oxygen or sulphur and R stands for various substituents, to a preparation process of said compounds and to therapeutic compositions containing the same. The compounds are particularly interesting in the treatment of ischemia.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: September 17, 1991
    Assignee: Societe de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S.)
    Inventors: Pierre Braquet, Andre Esanu, Jean-Pierre Laurent, Jacques Pommier
  • Patent number: 5049560
    Abstract: This invention relates to thieno-triazolo-diazepine derivatives of the formula ##STR1## wherein R represents various substituents, to a preparation process of these compounds consisting in reacting the thieno-triazolo-diazepine compound of the formula ##STR2## on RSO.sub.2 Cl and to therapeutic compositions containing the same. The compounds are particularly interesting as anti-PAF and anti-ischemic agents.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: September 17, 1991
    Assignee: Societe de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S.)
    Inventors: Andre Esanu, Pierre Braquet, Christiane Martin, Jean-Pierre Laurent
  • Patent number: 5016278
    Abstract: The method disclosed consists in analyzing the vocal signals in consecutive windows, in quantifying, on a determined number m of levels, the vocal signal in each of the windows and in measuring, in each of the windows, the vocal signal in each of the windows and in measuring, in each of the windows, the r-m-s value of the samples of the vocal signal. It consists constructing, in a vector space with n dimensions having, as its first base, the unit vectors (E.sub.0 to E.sub.n-1) of the energies measured on n consecutive windows, a resultant energy vector E corresponding to the sum of n energy vectors measured respectively in n windows of analysis of the vocal signal, then in achieving, in this space, a change of base having, as its first main axis, an oriented axis of unit vector having, as its components, the unit vectors of the first base, to project, in the new base obtained, the resultant energy vector. Codings on q bits such that 2.sup.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 14, 1991
    Assignee: Thomson-CSF
    Inventors: Denis Rochette, Pierre A. Laurent
  • Patent number: 4982341
    Abstract: The method disclosed comprises the steps of: cutting up the signal into frames, sampling each frame to obtain a digital signal comprising a determined number n of samples, pre-emphasizing the digital signal, filtering the pre-emphasized digital signal by means of a high-pass digital filter to obtain a filtered digital signal, measuring, in each frame, the maximum energy of the pre-emphasized signal and the maximum energy of the filtered digital signal, to achieve an energy ratio R between the maximum energy of the filtered digital signal and the maximum energy of the pre-emphasized digital signal.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: January 1, 1991
    Assignee: Thomson CSF
    Inventor: Pierre A. Laurent
  • Patent number: 4978565
    Abstract: The absorbent laminated sheet is composed of at least two plies (1.9), embossed, constituted essentially of cellulose fibers, bonded together at least partially by means of protruding elements relative to the surface of said plies and pointing inward to the sheet; it is characterized in that the protruding elements (101) are positioned essentially according to lines or combinations of lines reproducing spaced motifs (100), which recur indefinitely.Application as domestic or sanitary paper.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: December 18, 1990
    Assignee: Beghin-Say SA
    Inventors: Raymond Pigneul, Remy Ruppel, Pierre Laurent
  • Patent number: 4945312
    Abstract: The continuous phase angular demodulation method disclosed digitally processes the signal in baseband after having over-sampled it with reference to the bit period. The processing consists in routinely demodulating sub-sets of differential phases at the bit period T.sub.b shifted with respect to one another by fractions T.sub.b /q of this period, in correcting them, a priori, by the phase deviations associated with a set of pre-defined d frequency drifts and in computing, for the d.q sets thus obtained, a noise criterion. The set of demodulated bits chosen is the one that reduces this noise criterion to the minimum. The set of bits then enables computation of the phase variation emitted and, using this variation and the measured variation, the real frequency drift. Another demodulation taking this drift into account is done for the q sets of initial differential stages and the set minimizing the noise criterion is then chosen and fixes the synchronization bit by the sampling instants associated with it.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: July 31, 1990
    Assignee: Thomson-CSF
    Inventors: Gerard Auger, Pierre A. Laurent, Patrick Mocchi
  • Patent number: 4905256
    Abstract: A method and device are provided for multistate modulation and demodulation with adjustable protection level, consisting in separating the binary signals, before demodulation, into critical and non critical signals, in attributing to the non critical signals all the states of the modulation and in attributing to the critical signals a reduced number of states which are, in the modulation diagram, the furthest removed from each other.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: February 27, 1990
    Assignee: Thomson CSF
    Inventor: Pierre A. Laurent
  • Patent number: 4799241
    Abstract: The symbol synchronization method for the symbol demodulation of a digital signal uses E sequences of samples taken from the demodulated signal, each sequence being offset with respect to the following one by a fraction of the symbol period Ts/E. On the basis of each one of E sequences of samples (Si1,Si2, . . . SiN) ranging from from i=0 to E-1, a value F(i) of a pre-defined function F, optimized according to the type of modulation made at emission, is calculated. This function, which can be identified with a sine model, A+B COS(i-io)2.pi./E, can be used to determine io characteristic of the synchronization time-shift and, if necessary, A, characteristic of the d.c. offset, and B, characteristic of the variation in levels due to reception conditions. These values are used to correct the synchronization signal and, if necessary, the d.c. and the decision thresholds of the decision circuit during the symbol demodulation.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: January 17, 1989
    Assignee: Thomson-CSF
    Inventor: Pierre A. Laurent
  • Patent number: 4603393
    Abstract: The demodulator is for use with an angle modulated signal conveying a sequence of binary symbols. The signal is modulated at constant envelope and with continuous phase and may be treated as a sequence of elementary pulses that have been amplitude modulated using a principal function F.sub.p (t) derived from the frequency pulse characteristic of the modulation. The demodulator comprises two filters matched to the principle function and connected to receive quadrature components constituting the complex envelope of the received signal. The filters are followed by samplers. A calculating circuit operating at the bit rate calculates metric increments on the basis of P stored complex samples and transmits the increments to a decision circuit which performs a dynamic programming algorithm to determine the values of the bits in the sequence recursively.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: July 29, 1986
    Assignee: THOMSON-CSF
    Inventors: Pierre Laurent, Herve Ganem
  • Patent number: 4382232
    Abstract: A device for demodulating signals modulated by frequency-shift keying comprises a surface-wave filter having two input transducers supplied in parallel by the modulated signals and separated by a given distance, and an output transducer composed of electrodes e.sub.1 to e.sub.n+1 and e'.sub.1 to e'.sub.n+1. The signals delivered by the electrodes e'.sub.1 to e'.sub.n+1 are applied to the inputs of an algebraic summing device through switches I.sub.1 to I.sub.n+1 controlled by logical signals T.sub.1 to T.sub.n+1. The output of the summing device is connected to the output of the demodulating device through a threshold device; programming of the signals T.sub.1 to T.sub.n+1 makes it possible to provide a filter which is matched with the signals to be demodulated.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: May 3, 1983
    Assignee: Thomson-CSF
    Inventor: Pierre Laurent
  • Patent number: 4027261
    Abstract: The herein disclosed synchronization extractor is designed to recover a train of useful pulses of given recurrence period T from an input signal containing both useful pulses and parasitic pulses. Each period T is divided into n sampling intervals of a duration less than or equal to that of the pulses. The pulses present in the several intervals are respectively counted by n reversible counters. Backward-counting pulses, having a recurrence period which is greater than the period T but less than the recurrence periods of the parasitic pulses, are applied to the counters simultaneously. The useful pulses are collected from that counter in which the mean rate of the forward-counting pulses exceeds that of the backward-counting pulses.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: May 31, 1977
    Assignee: Thomson-CSF
    Inventors: Pierre Laurent, Ljubimko Milosevic